condition	mean	min	max
4 h after light	9.15573	8.28436	10.0271
8 h after light	10.66045	10.5277	10.7932
12 h after light	8.743694999999999	7.40729	10.0801
4 h after dark	18.967866666666666	17.9206	20.0319
8 h after dark	10.07119	5.42708	15.9684
12 h after dark	9.57316	2.01398	14.3433