condition	mean	min	max
0 h after light	8.236080000000001	7.4741	8.99806
4 h after light	19.1448	13.6392	24.6504
8 h after light	15.73865	14.6592	16.8181
4 h after dark	17.59525	15.6677	19.5228
8 h after dark	17.44645	15.1067	19.7862
12 h after dark	11.5304	10.9557	12.1051