Appendix A. Estimation Of Ambient Illumination Level - ATN NVG-7 Operator's Manual

TABlE A-1. STANDARD NATURAl lIGHT CONDITIONS AND
STANDARD NATURAl lIGHT
CONDITIONS
Quarter moon
Full moon
late twilight sky
twilight sky
overcast sky in the daytime
APPENDIx A
(Reference)
ESTIMATION OF AMBIENT
IllUMINATION lEVEl
IllUMINATION VAlUES
IllUMINATION VAlUE,
lUx
0.05
0.30
1.00
10.00
500.00
a-1