condition	mean	min	max
0 h after light	20.78	20.6425	20.9175
4 h after light	7.842955	6.39863	9.28728
8 h after light	6.46583	5.97989	6.95177
4 h after dark	9.30692	8.66868	9.94516
8 h after dark	9.862345000000001	9.19989	10.5248
12 h after dark	13.15176	8.66532	17.6382