condition	mean	min	max
4 h after light	20.29035	18.8591	21.7216
8 h after light	9.91902	8.83874	10.9993
12 h after light	14.296800000000001	12.4733	16.1203
4 h after dark	21.90015	18.7865	25.0138
8 h after dark	17.58475	15.1638	20.0057
12 h after dark	19.48075	14.6317	24.3298