Daily sum values represent an integration over time. Basically by summing the readings over the number of seconds in the measurement period, the units of radiant power are converted to radiant energy and are useful for studying daily effects related to daily exposure. Current available values are Caldwell biological spectral weighting function, Flint biological spectral weighting function, erythemally weighted irradiance, UV-A irradiance, and UV-B irradiance. To insure quality data, the In Situ calibrated data is available through the previous month.

Contour graphs of the data are available for any time selection. The contour graph will be displayed.