condition	mean	min	max
0 h after light	36.28615	34.8331	37.7392
4 h after light	12.51615	12.1583	12.874
8 h after light	16.13005	15.9003	16.3598
4 h after dark	18.00595	16.8763	19.1356
8 h after dark	20.04325	19.9774	20.1091
12 h after dark	22.66895	17.4777	27.8602