Definition: | "Date" is the date on which the measurement was taken. | "Time" is when the sample was collected from the stream. All times are in Eastern Standard Time (EST). | "Site" is where the sample was collected, at either the "Inlet" or "Outlet." | "Method" indicates the sampling method and frequency at which the corresponding sample was collected. Laboratory techniques were the same between "Methods", and the total phosphorus concentrations for each "Method" are directly comparable. | "Bottle" designates replicate water samples. | "TP_ugL" is total phosphorus concentration measured in a whole water, grab sample. | "Flag" indicated any corresponding comment or note that accompanies the corresponding total phosphorus concentration. |
Measurement Values Domain: | Format | YYYY-MM-DD | Precision | |
| | Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | Inlet | Definition | Water samples for total phosphorus analysis were collected at the "Outlet" site at 41.348889, -82.512222 | Source | |
| Code Definition | Code | Outlet | Definition | Water samples for total phosphorus analysis were collected at the "Outlet" site at 41.382222, -82.514444 | Source | |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | RL | Definition | "RL" samples were collected with a refrigerated ISCO autosampler and stored at 4°C until retrieval, processing, and analysis in the lab. Between 2015 and 2019, water samples were collected daily at both the "Inlet" and "Outlet" sites at 04:00, 12:00, and 20:00 (EST). During baseflow, a single sample was analyzed for each day, and during storm events three samples were analyzed at both "Inlet" and "Outlet." Beginning in 2019, sampling frequency at the "Outlet" was reduced to once per week during baseflow, and once per day during stormflow. At the "Inlet," the original sampling frequency of once per day during baseflow and three times per day (04:00, 12:00, 20:00) during stormflow has continued since 2015. Samples were retrieved from the autosampler weekly, meaning that they were never stored for more than 7 days in the autosampler. | Source | |
| Code Definition | Code | DIEL | Definition | "DIEL" samples were collected monthly with a refrigerated ISCO autosampler. Whole water samples were collected at two-hour intervals over a 24-hour span, and stored at 4°C until retrieval, processing, and analysis in the lab. | Source | |
| Code Definition | Code | SWMP | Definition | "SWMP" samples were collected monthly as whole water grab samples. "SWMP" samples were collected as field duplicates, and one "Outlet" sample was analyzed as a laboratory duplicate during each sampling event. | Source | |
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| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | 1 | Definition | A bottle designation of "1" is the first sample collected at a particular date and time. Sometimes, field or laboratory duplicates are collected and/or analyzed, that correspond with the "1" sample bottle. | Source | |
| Code Definition | Code | 1b | Definition | A bottle designation of "1b" indicates that the reported total phosphorus concentration is a laboratory duplicate of the "1" bottle collected on the same date/time and at the same site. | Source | |
| Code Definition | Code | 2 | Definition | A bottle designation of "2" indicates that sample was collected as a field duplicate. | Source | |
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| Unit | microgramPerLiter | Precision | 1 | Type | real |
| Allowed Values and DefinitionsEnumerated Domain | | Code Definition | Code | MDL | Definition | A flag of "MDL" indicates that the total phosphorus concentration was below the method detection limit and has thus been replaced with half of the method detection limit in the data table. | Source | |
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