condition	mean	min	max
4 h after light	18.0649	17.1676	18.9622
8 h after light	10.209875	9.70055	10.7192
12 h after light	8.942720000000001	8.61198	9.27346
4 h after dark	11.4995	10.4783	12.0528
8 h after dark	13.833433333333334	11.5156	15.8145
12 h after dark	17.1764	16.4407	17.6884