Inputs

Lux readings

Add one row for each relevant space, item, zone, document, or measurement set.

Row 1

Lux reading lux Enter a numeric project value in lux between 0 and 100000.

Row 2

Lux reading lux Enter a numeric project value in lux between 0 and 100000.

Row 3

Lux reading lux Enter a numeric project value in lux between 0 and 100000.

Row 4

Lux reading lux Enter a numeric project value in lux between 0 and 100000.

Row 5

Lux reading lux Enter a numeric project value in lux between 0 and 100000.

Lower percentile % Enter a numeric project value in % between 0 and 100. Upper percentile % Enter a numeric project value in % between 0 and 100. Measurement scope Choose the option that best matches the project condition.

Average lux -- lux

Lower percentile lux -- lux

Upper percentile lux -- lux

Percentile uniformity --

Measurement scope --

Calculation details

Average lux: -- lux
Lower percentile lux: -- lux
Upper percentile lux: -- lux
Percentile uniformity: --
Percentile span: -- lux
Reading count: --
Measurement scope: --

Important notes

Keep the raw readings, grid, instrument, and measurement method with any percentile summary.

Formulas

\(\displaystyle U_p = P_{\mathrm{low}} / E_{\mathrm{avg}}\)
Percentile interpolation is arithmetic evidence support only.

Explore percentile-based illuminance spread from a set of lux readings.

Percentile Uniformity Explorer is a planning aid. Keep the target source, product data, measurement method, and project assumptions with the result. Confirm compliance, installation, certification, and safety decisions with the responsible professional.

Inputs

Results

Formulas

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