condition	mean	min	max
4 h after light	16.548209	14.600756	18.495662
8 h after light	20.881412	15.925235	25.837589
12 h after light	19.7231305	18.464474	20.981787
4 h after dark	14.918610000000001	13.840754	15.996466
8 h after dark	14.984774999999999	14.433124	15.536426
12 h after dark	12.406134	12.406134	12.406134