condition	mean	min	max
4 h after light	9.064836666666666	9.00741	9.13984
8 h after light	8.66114	8.61191	8.69313
12 h after light	8.628680000000001	8.62007	8.64241
4 h after dark	8.611843333333333	8.428189999999999	8.73432
8 h after dark	8.835563333333333	8.79298	8.89976
12 h after dark	8.95775	8.94669	8.97264