condition	mean	min	max
4 h after light	4.626935	2.32699	6.92688
8 h after light	8.029475	7.575	8.48395
12 h after light	11.565240000000001	6.33208	16.7984
4 h after dark	15.699200000000001	14.2916	17.1068
8 h after dark	18.445500000000003	17.3975	19.4935
12 h after dark	18.380200000000002	18.3689	18.3915