condition mean min max 4 h after light 6368.275666666667 6156.183000000001 6532.781 8 h after light 5932.707666666667 5492.7390000000005 6194.13 12 h after light 5490.576 3286.805 7919.678000000001 16 h after light 8078.87 6279.781 9020.188 4 h after dark 8153.259333333333 7257.728 8672.988000000001 8 h after dark 5396.892333333333 3745.179 6513.003000000001