condition	mean	min	max
0 h after light	17.291150000000002	16.0495	18.5328
4 h after light	7.537865	6.74101	8.33472
8 h after light	7.558615	7.42041	7.69682
4 h after dark	7.68631	7.46017	7.91245
8 h after dark	8.240604999999999	7.96369	8.51752
12 h after dark	12.24611	9.99372	14.4985