condition	mean	min	max
4 h after light	2.774695	2.66824	2.88115
8 h after light	6.882405	6.73058	7.03423
12 h after light	9.19396	9.12296	9.26496
4 h after dark	10.13844	9.43738	10.8395
8 h after dark	6.039820000000001	6.01473	6.06491
12 h after dark	4.652875	4.34727	4.95848