condition	mean	min	max
4 h after light	9.254655	8.9401	9.56921
8 h after light	15.2986	15.0933	15.5039
12 h after light	19.967550000000003	16.8229	23.1122
4 h after dark	19.263033333333333	18.3251	19.8085
8 h after dark	8.487323333333332	7.85399	9.19211
12 h after dark	8.82621	8.01599	9.30687