Description
Return uniqueCovered as that difference and coverage = uniqueCovered/windowDuration.
Environmental monitoring coverage depends on what counts in the denominator. Time, effort, area, sampled volume and exposure weights describe different support measures; excluding missing or ineligible portions changes the question answered by a fraction.
Return uniqueCovered as that difference and coverage = uniqueCovered/windowDuration.
When to use this tool
Use Monitoring Window Coverage Share when checking a monitoring or sampling share with an explicit inclusion and overlap convention.
How to use the tool and how it works
- Enter windowDuration, coveredDurations, suppliedOverlap. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read uniqueCovered, coverage. Use the output convention below.
Require positive windowDuration, nonnegative coveredDurations and suppliedOverlap between zero and their sum. Require sum(coveredDurations)-suppliedOverlap <= windowDuration. Return uniqueCovered as that difference and coverage = uniqueCovered/windowDuration.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| windowDuration | Window Duration | Required. Finite number; strictly above 0. |
| coveredDurations | Covered Durations | Required. Array of finite number; maximum items 256. |
| suppliedOverlap | Supplied Overlap | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| uniqueCovered | Unique Covered | Required. Finite number. |
| coverage | Coverage | Required. Finite number. |
{
"input": {
"windowDuration": 100,
"coveredDurations": [
30,
40
],
"suppliedOverlap": 10
},
"output": {
"uniqueCovered": 60,
"coverage": 0.6
}
}Limitations and assumptions
- Overlap is supplied as a total duplicate-duration deduction, not computed from timestamps. Multiple overlaps must be counted so that the deduction represents overcounting correctly; passing bounds does not prove temporal coverage is correct.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Review source intervals and sampling design, and compute overlaps from actual records when an aggregate deduction cannot be justified.
References
Similar or alternative tools
- Wetland Inundation Day Fraction Term
Set denominator to observedHours-missingHours when excludeMissing is true, otherwise observedHours, then return fraction = inundatedHours/denominator.
- Waste Bin Void Share Correction Tool
Calculate waste bin void share correction from explicit caller-supplied inputs.