condition	mean	min	max
4 h after light	6.96768	6.82154	7.14999
8 h after light	6.93609	6.68641	7.20425
12 h after light	6.33028	6.04075	6.51894
4 h after dark	6.486996666666666	6.3986	6.57378
8 h after dark	6.42776	6.22914	6.762389999999999
12 h after dark	6.584796666666667	6.55053	6.61988