condition	mean	min	max
4 h after light	8.148813333333333	7.9679	8.24167
8 h after light	8.553446666666666	8.47058	8.60774
12 h after light	8.74041	8.58425	9.0067
4 h after dark	8.94374	8.80458	9.09178
8 h after dark	8.892213333333332	8.72213	9.19304
12 h after dark	8.70119	8.49503	9.01051