condition	mean	min	max
4 h after light	4.8101	3.59006	6.03014
8 h after light	7.157220000000001	5.3982	8.91624
12 h after light	8.578855	7.91478	9.24293
4 h after dark	19.08765	16.4013	21.774
8 h after dark	8.912325	8.6783	9.14635
12 h after dark	8.58153	7.84775	9.31531