Unique elements for the UVMRP/dailysums data entity.

An integration over time (days) of UV-A, UV-B, Erythemal, Flint, Caldwell, and Vitamin D. All units are (J/(m2 day/hour)).

See the UVMRP_README for headers common to all entities.

Column headers:
•	UV-A (irradiance)
•	UV-B (irradiance)
•	Erythemal (weighted irradiance)
•	Flint (biological spectrum weighting function)
•	Caldwell (biological spectrum weighting function)
•	Vitamin D (spectral weighting function)