Table 1.

Normalized product function used in the calculation of SPF. Values adapted from the work of Sayre and co-workers [26].

Wavelenght (λ, nm)	EE × I (Normalized)
290	0.0150
295	0.0817
300	0.2874
305	0.3278
310	0.1864
315	0.0839
320	0.0180
Total	1

EE—erythremal effect spectrum, I—solar intensity spectrum.