Timeline / Data.gov — Health Datasets
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A new raw object was archived. Both versions are preserved. 360 line(s) added, 467 line(s) removed.
Evidence
| Source | Data.gov — Health Datasets |
|---|---|
| Agency | Data.gov |
| URL | https://api.gsa.gov/technology/datagov/v4/search?q=health&sort=last_harvested_date&per_page=100&api_key=${DATAGOV_API_KEY} |
| Observed by | Civic Memory, directly, on 2026-10-03T06:25:36+00:00 |
| Content type | application/json |
| Current object |
d288881d653b8f0d4a280c8143e0a62e8f267f00b7b6c3b42c8262a384c586c5
download raw
metadata
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| Previous object |
d6276ea0a9ebbccaf1f229d6be69fa86175f02c3266acc787411ef286c240c14
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metadata
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What changed derived
This diff is not evidence. It was produced by
civic-memory.diff_engine 1.1.0 at
2026-10-03T06:25:36+00:00 by normalizing the two archived objects above. The
objects are authoritative; this reading of them can be regenerated or deleted
without loss. 360 line(s) added, 467 line(s) removed.
--- previous +++ current @@ -1,11 +1,301 @@ { - "after": "WzE3OTA4MDM4MTkxNDYsMTQuNjczNzg1LDAsIjAwZGZmNGYwLTc0MTAtNDc0Ny05MWQwLTlmYTkyMDY4NGVkYiJd", + "after": "WzE3OTA4MDM4ODU5NDUsMzQuMTc5OTMsMCwiNzIxOGFlNjEtYTVhOC00MTU5LThhOWQtNWI3M2RlNWYxNzRhIl0=", "results": [ { - "_score": 13.335302, + "_score": 6.6343822, + "_sort": [ + 1790998124853, + 6.6343822, + 0, + "19410a24-37e1-492b-b026-d450def274fb" + ], + "access_level": "public", + "dcat": { + "accessLevel": "public", + "bureauCode": [ + "010:12" + ], + "contactPoint": { + "@type": "vcard:Contact", + "fn": "Marissa L Cassell", + "hasEmail": "mailto:mcassell@usgs.gov" + }, + "description": "In streams located throughout temperate regions of the United States, salinity and chloride concentrations have been increasing over time, which can threaten stream health and drinking water quality. During snow melt events, chloride concentrations can rapidly increase and exceed ecological thresholds, making it important to frequently determine chloride concentrations. However, traditional sampling poses difficulties to rapidly determining chloride concentrations due to timing constraints. To supplement traditional sampling, specific conductance, which is monitored remotely and at 15-minute intervals in many streams, has been used as a primary predictor of chloride concentrations in surrogate regression models. Prior to developing surrogate models, geochemical modeling can be used to calculate the percent contribution of chloride to specific conductance to determine if site-specific regression models are appropriate. In Chester County, Pennsylvania, chloride surrogate models have been previously published for three stream sites using streamflow and specific conductance as explanatory variables. The previously published models use data collected through late 2022/early 2023. However, these models were recalculated to include data through 2024. This data release contains supporting information for the publication titled \"Method to Rapidly Track Salinization in Surface Waters\", and included in the data release is code to complete the geochemical analysis, compare the published models both visually and statistically to newly calculated models that incorporate data collected through 2024, and to create figures evaluating the data. \nModeling data and code are included for 3 stream sites:\nValley Creek at PA Turnpike Bridge near Valley Forge, PA (USGS station 01473169) with discrete water-quality data from nearby downstream site Valley Creek at Wilson Road near Valley Forge, PA (USGS station 01473170);\nWhite Clay Creek near Strickersville, PA (USGS station 01478245); and \nBrandywine Creek at Chadds Ford, PA (USGS station 01481000).\nThis data release contains 11 files: \n1. \"READ_ME_SuppInfo_MethodTrackSalinization.txt\": This file contains important information about the data release files and should be read prior to using the data and code. \n2. \"GEOREF_SuppInfo_MethodTrackSalinization.txt\": This file contains information about the sites used in the analysis. \n3. \"PHREEQC_salinitycalcs.R\": This is the code to complete the geochemical analysis using PHREEQC. \n4-6. \"phreeq_xxxxxxxx.csv\": These are the input files for the \"PHREEQC_salinitycalcs.R\" script. These input files contain discrete water-quality data. xxxxxxxx refers to the three stream sites: USGS-01473170, USGS-01478245, USGS-01481000. \n7. \"models_ancova.R\": This is the code to develop the published and newly calculated chloride surrogate regression models. There is also code to complete an Analysis of Covariance to statistically compare the surrogate models. \n8. \"Prediction_Intervals_Plots_Flow_Duration_Curves.R\": This is the code to visually compare the published and newly calculated surrogate regression models, as well as to create flow duration curves. \n9-11. \"combined_data_xxxxxxxx.csv\": Three input files for the \"models_ancova.R\" script and the \"Prediction_Intervals_Plots_Flow_Duration_Curves.R\" script. These files contain chloride, specific conductance, and streamflow data. xxxxxxxx refers to the three stream sites: USGS-01473169, USGS-01478245, USGS-01481000.", + "distribution": [ + { + "@type": "dcat:Distribution", + "accessURL": "https://doi.org/10.5066/P1QGVZCS", + "description": "Landing page for access to the data", + "format": "XML", + "mediaType": "application/http", + "title": "Digital Data" + }, + { + "@type": "dcat:Distribution", + "description": "The metadata original format", + "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.698be31bb66b01469f9c9f89.xml", + "format": "XML", + "mediaType": "text/xml", + "title": "Original Metadata" + } + ], + "identifier": "http://datainventory.doi.gov/id/dataset/USGS_698be31bb66b01469f9c9f89", + "keyword": [ + "Chester County", + "Geochemistry", + "Pennsylvania", + "USGS:698be31bb66b01469f9c9f89", + "Water Quality", + "environment", + "inlandWaters" + ], + "modified": "2026-09-30T00:00:00Z", + "publisher": { + "@type": "org:Organization", + "name": "U.S. Geological Survey" + }, + "spatial": "-76.1400, 39.7200, -75.3700, 40.2500", + "theme": [ + "geospatial" + ], + "title": "Supporting information for publication titled \"Method to Rapidly Track Salinization in Surface Waters\"" + }, + "description": "In streams located throughout temperate regions of the United States, salinity and chloride concentrations have been increasing over time, which can threaten stream health and drinking water quality. During snow melt events, chloride concentrations can rapidly increase and exceed ecological thresholds, making it important to frequently determine chloride concentrations. However, traditional sampling poses difficulties to rapidly determining chloride concentrations due to timing constraints. To supplement traditional sampling, specific conductance, which is monitored remotely and at 15-minute intervals in many streams, has been used as a primary predictor of chloride concentrations in surrogate regression models. Prior to developing surrogate models, geochemical modeling can be used to calculate the percent contribution of chloride to specific conductance to determine if site-specific regression models are appropriate. In Chester County, Pennsylvania, chloride surrogate models have been previously published for three stream sites using streamflow and specific conductance as explanatory variables. The previously published models use data collected through late 2022/early 2023. However, these models were recalculated to include data through 2024. This data release contains supporting information for the publication titled \"Method to Rapidly Track Salinization in Surface Waters\", and included in the data release is code to complete the geochemical analysis, compare the published models both visually and statistically to newly calculated models that incorporate data collected through 2024, and to create figures evaluating the data. \nModeling data and code are included for 3 stream sites:\nValley Creek at PA Turnpike Bridge near Valley Forge, PA (USGS station 01473169) with discrete water-quality data from nearby downstream site Valley Creek at Wilson Road near Valley Forge, PA (USGS station 01473170);\nWhite Clay Creek near Strickersville, PA (USGS station 01478245); and \nBrandywine Creek at Chadds Ford, PA (USGS station 01481000).\nThis data release contains 11 files: \n1. \"READ_ME_SuppInfo_MethodTrackSalinization.txt\": This file contains important information about the data release files and should be read prior to using the data and code. \n2. \"GEOREF_SuppInfo_MethodTrackSalinization.txt\": This file contains information about the sites used in the analysis. \n3. \"PHREEQC_salinitycalcs.R\": This is the code to complete the geochemical analysis using PHREEQC. \n4-6. \"phreeq_xxxxxxxx.csv\": These are the input files for the \"PHREEQC_salinitycalcs.R\" script. These input files contain discrete water-quality data. xxxxxxxx refers to the three stream sites: USGS-01473170, USGS-01478245, USGS-01481000. \n7. \"models_ancova.R\": This is the code to develop the published and newly calculated chloride surrogate regression models. There is also code to complete an Analysis of Covariance to statistically compare the surrogate models. \n8. \"Prediction_Intervals_Plots_Flow_Duration_Curves.R\": This is the code to visually compare the published and newly calculated surrogate regression models, as well as to create flow duration curves. \n9-11. \"combined_data_xxxxxxxx.csv\": Three input files for the \"models_ancova.R\" script and the \"Prediction_Intervals_Plots_Flow_Duration_Curves.R\" script. These files contain chloride, specific conductance, and streamflow data. xxxxxxxx refers to the three stream sites: USGS-01473169, USGS-01478245, USGS-01481000.", + "distribution_titles": [ + "Digital Data", + "Original Metadata" + ], + "harvest_record": "https://catalog.data.gov/harvest_record/abfde54f-145b-4591-941f-54f655dd9f8d", + "harvest_record_raw": "https://catalog.data.gov/harvest_record/abfde54f-145b-4591-941f-54f655dd9f8d/raw", + "has_download": true, + "has_spatial": true, + "identifier": "http://datainventory.doi.gov/id/dataset/USGS_698be31bb66b01469f9c9f89", + "keyword": [ + "Chester County", + "Geochemistry", + "Pennsylvania", + "USGS:698be31bb66b01469f9c9f89", + "Water Quality", + "environment", + "inlandWaters" + ], + "last_harvested_date": "2026-10-03T03:28:44.853683", + "organization": { + "aliases": [ + "dept" + ], + "code_repo_exempt": false, + "code_repo_url": null, + "description": null, + "id": "143529f7-2eef-4a07-b227-93ac9e84fad8", + "logo": "https://raw.githubusercontent.com/GSA/logo/master/doi.png", + "name": "Department of the Interior", + "organization_type": "Federal Government", + "slug": "doi" + }, + "parent_identifier": null, + "popularity": 0, + "publisher": "U.S. Geological Survey", + "slug": "supporting-information-for-publication-titled-method-to-rapidly-track-salinization-in-surf", + "spatial_centroid": { + "lat": 39.932, + "lon": -75.83200000000001 + }, + "spatial_shape": { + "coordinates": [ + [ + [ + -76.14, + 39.72 + ], + [ + -76.14, + 40.25 + ], + [ + -75.37, + 40.25 + ], + [ + -75.37, + 39.72 + ], + [ + -76.14, + 39.72 + ] + ] + ], + "type": "Polygon" + }, + "theme": [ + "geospatial" + ], + "title": "Supporting information for publication titled \"Method to Rapidly Track Salinization in Surface Waters\"", + "type": "dataset" + }, + { + "_score": 10.313358, + "_sort": [ + 1790993686303, + 10.313358, + 0, + "010f5ae4-8158-40a5-8996-297ecfe8d6ba" + ], + "access_level": "public", + "dcat": { + "accessLevel": "public", + "bureauCode": [ + "010:12" + ], + "contactPoint": { + "@type": "vcard:Contact", + "fn": "U.S. Geological Survey Pacific Islands Water Science Center", + "hasEmail": "mailto:dc_hi@usgs.gov" + }, + "description": "The spreadsheets associated with this metadata file represent: (Tab 1) Streamflow and drainage basin characteristics of selected gaged steams in Hawaii used to develop statistical models to estimate surface-water availability during low flow conditions and for varying rainfall conditions. For gaged streams on Maui, two sets of projected rainfall conditions for the late 21st century and associated estimates of changes in low flows and usable habitat for native stream fauna are also provided. (Tab 2) Drainage basin characteristics of ungaged streams on Maui used to apply the statistical models, two sets of projected rainfall conditions for the late 21st century, and associated estimates of changes in low flows and usable stream habitat. A list of the stream characteristics and study results are included in this metadata file as well as references for data sources. Refer to Bassiouni et al. (in press) for details of the methods and data sources used to determine these characteristics and results. Streams were classified based on the elasticity of low flows to rainfall and multiple linear regressions were developed using random effects panel regression methods as described in Bassiouni et al. (in press).", + "distribution": [ + { + "@type": "dcat:Distribution", + "accessURL": "https://doi.org/10.5066/F7TH8JV3", + "description": "Landing page for access to the data", + "format": "XML", + "mediaType": "application/http", + "title": "Digital Data" + }, + { + "@type": "dcat:Distribution", + "description": "The metadata original format", + "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.58460697e4b04fc80e523667.xml", + "format": "XML", + "mediaType": "text/xml", + "title": "Original Metadata" + } + ], + "identifier": "http://datainventory.doi.gov/id/dataset/USGS_58460697e4b04fc80e523667", + "keyword": [ + "Hawaii", + "Kauai", + "Maui", + "Oahu", + "Pacific islands", + "USGS:58460697e4b04fc80e523667", + "climate change", + "environment", + "geoscientificInformation", + "health", + "hydrology", + "low flows", + "modeling", + "precipitation (atmospheric)", + "rainfall", + "rainfall elasticity", + "stream habitat", + "stream-gage measurement", + "streamflow" + ], + "modified": "2026-09-30T00:00:00Z", + "publisher": { + "@type": "org:Organization", + "name": "U.S. Geological Survey" + }, + "spatial": "-156.69, 21.02, -155.98, 20.58", + "theme": [ + "geospatial" + ], + "title": "Summary drainage basin and low-flow characteristics in gaged Hawaii streams and summary rainfall projections for the late 21st century and associated changes in low flows and usable habitat for native stream fauna in gaged and ungaged Maui, HI streams" + }, + "description": "The spreadsheets associated with this metadata file represent: (Tab 1) Streamflow and drainage basin characteristics of selected gaged steams in Hawaii used to develop statistical models to estimate surface-water availability during low flow conditions and for varying rainfall conditions. For gaged streams on Maui, two sets of projected rainfall conditions for the late 21st century and associated estimates of changes in low flows and usable habitat for native stream fauna are also provided. (Tab 2) Drainage basin characteristics of ungaged streams on Maui used to apply the statistical models, two sets of projected rainfall conditions for the late 21st century, and associated estimates of changes in low flows and usable stream habitat. A list of the stream characteristics and study results are included in this metadata file as well as references for data sources. Refer to Bassiouni et al. (in press) for details of the methods and data sources used to determine these characteristics and results. Streams were classified based on the elasticity of low flows to rainfall and multiple linear regressions were developed using random effects panel regression methods as described in Bassiouni et al. (in press).", + "distribution_titles": [ + "Digital Data", + "Original Metadata" + ], + "harvest_record": "https://catalog.data.gov/harvest_record/f96bfda3-079a-4574-aa2e-1232b0f601ab", + "harvest_record_raw": "https://catalog.data.gov/harvest_record/f96bfda3-079a-4574-aa2e-1232b0f601ab/raw", + "has_download": true, + "has_spatial": true, + "identifier": "http://datainventory.doi.gov/id/dataset/USGS_58460697e4b04fc80e523667", + "keyword": [ + "Hawaii", + "Kauai", + "Maui", + "Oahu", + "Pacific islands", + "USGS:58460697e4b04fc80e523667", + "climate change", + "environment", + "geoscientificInformation", + "health", + "hydrology", + "low flows", + "modeling", + "precipitation (atmospheric)", + "rainfall", + "rainfall elasticity", + "stream habitat", + "stream-gage measurement", + "streamflow" + ], + "last_harvested_date": "2026-10-03T02:14:46.303066", + "organization": { + "aliases": [ + "dept" + ], + "code_repo_exempt": false, + "code_repo_url": null, + "description": null, + "id": "143529f7-2eef-4a07-b227-93ac9e84fad8", + "logo": "https://raw.githubusercontent.com/GSA/logo/master/doi.png", + "name": "Department of the Interior", + "organization_type": "Federal Government", + "slug": "doi" + }, + "parent_identifier": null, + "popularity": 0, + "publisher": "U.S. Geological Survey", + "slug": "summary-drainage-basin-and-low-flow-characteristics-in-gaged-hawaii-streams-and-summary-ra", + "spatial_centroid": { + "lat": 20.844, + "lon": -156.406 + }, + "spatial_shape": { + "coordinates": [ + [ + [ + -156.69, + 21.02 + ], + [ + -156.69, + 20.58 + ], + [ + -155.98, + 20.58 + ], + [ + -155.98, + 21.02 + ], + [ + -156.69, + 21.02 + ] + ] + ], + "type": "Polygon" + }, + "theme": [ + "geospatial" + ], + "title": "Summary drainage basin and low-flow characteristics in gaged Hawaii streams and summary rainfall projections for the late 21st century and associated changes in low flows and usable habitat for native stream fauna in gaged and ungaged Maui, HI streams", + "type": "dataset" + }, + { + "_score": 13.33559, "_sort": [ 1790979834517, - 13.335302, + 13.33559, 11, "1315ea97-cbd1-4a66-9d5c-91252cda9633" ], @@ -157,10 +447,10 @@ "type": "dataset" }, { - "_score": 2.5250168, + "_score": 2.5250359, "_sort": [ 1790979667139, - 2.5250168, + 2.5250359, 74, "791f92e6-0c92-42a4-b9be-6f3e4ae46131" ], @@ -285,10 +575,10 @@ "type": "dataset" }, { - "_score": 3.9216971, + "_score": 3.9217525, "_sort": [ 1790979578741, - 3.9216971, + 3.9217525, 99, "91285c37-3e59-42d1-8b57-4d75a2ec2fb6" ], @@ -384,10 +674,10 @@ "type": "dataset" }, { - "_score": 16.243528, + "_score": 16.244127, "_sort": [ 1790979239526, - 16.243528, + 16.244127, 18, "c0920c3f-0339-4eac-9b66-6495cc508a41" ], @@ -484,10 +774,10 @@ "type": "dataset" }, { - "_score": 15.745532, + "_score": 15.746142, "_sort": [ 1790974724027, - 15.745532, + 15.746142, 2, "377f56f8-58ef-4f8b-bb46-f78317e7fdf7" ], @@ -638,10 +928,10 @@ "type": "dataset" }, { - "_score": 15.745532, + "_score": 15.746142, "_sort": [ 1790974722691, - 15.745532, + 15.746142, 2, "fa1e4301-1b10-442c-b35c-e11f0fd1f39f" ], @@ -792,10 +1082,10 @@ "type": "dataset" }, { - "_score": 15.745532, + "_score": 15.746142, "_sort": [ 1790974718833, - 15.745532, + 15.746142, 2, "0a8915db-1790-4008-b019-072b2610e29a" ], @@ -946,10 +1236,10 @@ "type": "dataset" }, { - "_score": 15.745532, + "_score": 15.746142, "_sort": [ 1790974716193, - 15.745532, + 15.746142, 1, "58bdea70-d0f2-43e7-995c-6e8986ba9a9c" ], @@ -1100,10 +1390,10 @@ "type": "dataset" }, { - "_score": 15.738491, + "_score": 15.73889, "_sort": [ 1790974714815, - 15.738491, + 15.73889, 4, "c1ff7bf1-4e8a-4d7e-bdf7-1bf3f0cfaf6a" ], @@ -1254,10 +1544,10 @@ "type": "dataset" }, { - "_score": 13.477321, + "_score": 13.47779, "_sort": [ 1790974713472, - 13.477321, + 13.47779, 8, "e88e8188-68ac-4d78-a133-487bd3f20b90" ], @@ -1488,10 +1778,10 @@ "type": "dataset" }, { - "_score": 12.340831, + "_score": 12.341151, "_sort": [ 1790970862308, - 12.340831, + 12.341151, 0, "3f6a0f75-1754-49eb-880a-7abb17a02a55" ], @@ -1610,10 +1900,10 @@ "type": "dataset" }, { - "_score": 15.46486, + "_score": 15.465376, "_sort": [ 1790970857318, - 15.46486, + 15.465376, 0, "9d92dc4e-88ad-442e-96b9-cd7c6ff09b45" ], @@ -1742,10 +2032,10 @@ "type": "dataset" }, { - "_score": 11.553116, + "_score": 11.553339, "_sort": [ 1790970831781, - 11.553116, + 11.553339, 0, "de58d09b-5c49-4f37-814f-f8e6cfe84959" ], @@ -1863,10 +2153,10 @@ "type": "dataset" }, { - "_score": 1.2354546, + "_score": 1.2354708, "_sort": [ 1790970828852, - 1.2354546, + 1.2354708, 0, "dc7a406e-bdf0-4f6f-84d9-d2fe982bb22a" ], @@ -1999,10 +2289,10 @@ "type": "dataset" }, { - "_score": 0.8591776, + "_score": 0.8591795, "_sort": [ 1790970827422, - 0.8591776, + 0.8591795, 0, "946912fa-b154-4d15-bf9f-82f81511ae63" ], @@ -2140,10 +2430,10 @@ "type": "dataset" }, { - "_score": 1.1370964, + "_score": 1.1371078, "_sort": [ 1790970822422, - 1.1370964, + 1.1371078, 0, "22cce783-495b-4dae-a4ba-5361ad689832" ], @@ -2248,10 +2538,10 @@ "type": "dataset" }, { - "_score": 79.11081, + "_score": 79.11017, "_sort": [ 1790970821051, - 79.11081, + 79.11017, 0, "81c26514-349e-45f3-92b8-145b915cf78a" ], @@ -2354,10 +2644,10 @@ "type": "dataset" }, { - 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11.347101, + 11.345739, 0, "dbddd360-05df-4c45-b311-adc75720514f" ], @@ -3144,10 +3434,10 @@ "type": "dataset" }, { - "_score": 1.6766357, + "_score": 1.676651, "_sort": [ 1790970787736, - 1.6766357, + 1.676651, 0, "8a47347e-9b76-43cf-b456-8b7b00b856b8" ], @@ -3289,10 +3579,10 @@ "type": "dataset" }, { - "_score": 1.8947144, + "_score": 1.8947334, "_sort": [ 1790970777585, - 1.8947144, + 1.8947334, 0, "4ea7bb6e-747d-4172-8c93-ee26d24990c1" ], @@ -3431,10 +3721,10 @@ "type": "dataset" }, { - "_score": 12.05245, + "_score": 12.052753, "_sort": [ 1790970775361, - 12.05245, + 12.052753, 0, "dd6cc658-22ff-4424-889f-d947e3fb7357" ], @@ -3552,10 +3842,10 @@ "type": "dataset" }, { - "_score": 12.394363, + "_score": 12.394665, "_sort": [ 1790970774378, - 12.394363, + 12.394665, 0, "c182bc9e-4fce-4a8e-ba6d-69333d01fc88" ], @@ -3990,10 +4280,10 @@ "type": "dataset" }, { - "_score": 0.8105631, + "_score": 0.810565, "_sort": [ 1790970773931, - 0.8105631, + 0.810565, 0, "bbf8a10a-d7a1-4edf-b51c-0997f2765877" ], @@ -4102,10 +4392,10 @@ "type": "dataset" }, { - 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Included in the data files for each dataset are: (1) the cumulative particle number concentration (PNC, (1/mL)); (2) the concentration distribution density (CDD, (1/mL·nm)) based upon five bins centered at each particle population peak diameter; (3) the CDD in higher resolution, varied-width bins. The lower-diameter bin edge (µm) is given for (2) and (3). Additionally, the PTA, RMM, and ESZ files each contain unweighted mean cumulative particle number concentrations and concentration distribution densities calculated from all datasets reporting values. The associated standard deviations and standard errors of the mean are also given. In the OTH file, the means and standard deviations were calculated using only data from one of the sub-groups (holographic particle characterization) that had n = 3 paired datasets. Where necessary, datasets not using the common bin resolutions are noted (PTA, OTH groups). 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Included in this publication are 487 samples analyzed for 174 ubiquitous environmental contaminants such as (poly)brominated diphenyl ethers (BDEs), mercury, organochlorine pesticides (OCPs), and polychlorinated biphenyls (PCBs). Data were collated to form a dataset useful in chemometric and related analyses of the marine ecosystem in the north Pacific Ocean.", - "distribution": [ - { - "accessURL": "https://doi.org/10.18434/mds2-2431", - "title": "DOI Access for Data Supporting \"Seabird Tissue Archival and Monitoring Project (STAMP) Data from 1999-2010\"" - }, - { - "description": "A list of the column names present in files \"stamp_chemistry.csv\" and \"stamp_samples.csv\" with human meaningful definitions.", - "downloadURL": "https://data.nist.gov/od/ds/mds2-2431/reported_fields.csv", - "format": "comma-separated-value", - "mediaType": "application/vnd.ms-excel", - "title": "Data Dictionary" - }, - { - "description": "Analytical chemistry values for this data set including aliquot ID, analyte name, detection limit, measured value, detection status, units, analyte category, and a statistical value. 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