condition	mean	min	max
4 h after light	9.163274999999999	8.3918	9.93475
8 h after light	7.324135	7.13704	7.51123
12 h after light	9.447545	8.43879	10.4563
4 h after dark	21.4453	20.4888	23.1364
8 h after dark	19.274733333333334	17.8691	20.211
12 h after dark	19.538233333333334	18.2143	21.1794