condition	mean	min	max
4 h after light	21.0	21.0	21.0
8 h after light	16.8	3.9	29.7
12 h after light	8.2	5.2	11.2
4 h after dark	18.85	1.0	36.7
8 h after dark	9.200000000000001	1.6	16.8
12 h after dark	26.35	16.7	36.0