condition	mean	min	max
4 h after light	8.679533333333334	8.52108	8.8134
8 h after light	9.631853333333334	9.54185	9.68239
12 h after light	9.53582	9.3581	9.75122
4 h after dark	8.97166	8.456380000000001	9.33906
8 h after dark	8.62597	8.26721	9.07749
12 h after dark	8.135246666666667	7.91125	8.25672