condition	mean	min	max
4 h after light	7.8843466666666675	7.60601	8.258230000000001
8 h after light	7.26764	7.0041	7.4146600000000005
12 h after light	6.7274899999999995	6.30336	7.0331399999999995
4 h after dark	7.65942	7.422789999999999	8.04461
8 h after dark	8.036516666666667	7.525930000000001	8.4847
12 h after dark	9.14985	9.039760000000001	9.29228