condition	mean	min	max
4 h after light	6.352643333333334	5.84508	6.66051
8 h after light	6.534120000000001	6.10392	6.870430000000001
12 h after light	6.313926666666667	5.82712	6.58378
4 h after dark	6.4574533333333335	6.08449	6.7606
8 h after dark	6.59436	5.9291	7.060630000000001
12 h after dark	6.814103333333334	6.39152	7.04409