condition	mean	min	max
3 h after light	13.725966666666666	12.5636	15.1508
6 h after light	14.936633333333333	11.4784	18.5532
9 h after light	17.788	13.3497	24.096
12 h after light	19.908425	17.9348	22.5813
3 h after dark	20.7831	17.9449	23.9106
6 h after dark	20.091	18.6184	22.3921
9 h after dark	16.346733333333333	14.6388	19.3364
12 h after dark	16.34905	13.3316	19.3665