condition	mean	min	max
4 h after light	8.568505	7.31131	9.8257
8 h after light	7.63077	7.50135	7.76019
12 h after light	14.36425	13.6648	15.0637
4 h after dark	14.3422	12.9999	15.484
8 h after dark	16.0365	14.6393	17.6111
12 h after dark	10.369243333333333	8.82803	11.8999