condition	mean	min	max
0 h after light	10.399835	9.19947	11.6002
4 h after light	5.544525	4.46134	6.62771
8 h after light	2.07766	1.43151	2.72381
4 h after dark	18.01425	13.4415	22.587
8 h after dark	18.4008	16.3066	20.495
12 h after dark	17.6538	16.6079	18.6997