condition mean min max 4 h after light 5.700283333333333 5.34216 5.93542 8 h after light 5.699793333333334 5.65643 5.78481 12 h after light 5.97156 5.9145199999999996 6.0107800000000005 4 h after dark 6.04389 5.9756800000000005 6.16528 8 h after dark 6.210603333333333 6.03806 6.3002 12 h after dark 6.37672 6.25857 6.4594