condition	mean	min	max
4 h after light	8.030173333333334	7.89135	8.298119999999999
8 h after light	8.470460000000001	8.27202	8.6354
12 h after light	8.862946666666668	8.68802	9.163680000000001
4 h after dark	8.264943333333333	8.08	8.412460000000001
8 h after dark	8.090473333333334	7.933089999999999	8.238380000000001
12 h after dark	7.740513333333333	7.58132	7.84507