condition	mean	min	max
4 h after light	8.95833	8.85327	9.02023
8 h after light	8.97847	8.79983	9.09121
12 h after light	8.9507	8.86652	9.0514
4 h after dark	8.843313333333333	8.65468	9.04217
8 h after dark	8.997563333333334	8.88236	9.21602
12 h after dark	9.089316666666667	8.87699	9.21968