condition	mean	min	max
4 h after light	8.033479999999999	7.51458	8.55238
8 h after light	11.3402	11.1021	11.5783
12 h after light	9.522565	7.99403	11.0511
4 h after dark	19.2105	18.8641	19.8034
8 h after dark	17.961	15.9562	21.7349
12 h after dark	9.059276666666667	7.82619	9.96195