condition	mean	min	max
4 h after light	4.19993	4.1893400000000005	4.2085
8 h after light	4.24744	4.1908199999999995	4.2915
12 h after light	4.270403333333333	4.13799	4.46931
4 h after dark	4.243323333333334	4.19411	4.31232
8 h after dark	4.137886666666667	4.0669900000000005	4.26905
12 h after dark	4.16182	4.14455	4.17376