condition	mean	min	max
0 h after light	8.272335	8.26496	8.27971
4 h after light	8.00428	7.69515	8.31341
8 h after light	8.876945	8.79074	8.96315
4 h after dark	8.86401	8.42944	9.29858
8 h after dark	8.934595	8.76611	9.10308
12 h after dark	8.06333	7.60826	8.5184