condition	mean	min	max
0 h after light	7.919409999999999	7.41134	8.42748
4 h after light	8.787514999999999	8.63258	8.94245
8 h after light	9.327919999999999	9.19505	9.46079
4 h after dark	9.733605	9.47342	9.99379
8 h after dark	9.36891	9.29	9.44782
12 h after dark	7.799085	7.75952	7.83865