condition	mean	min	max
4 h after light	15.34895	12.6705	18.0274
8 h after light	14.9482	12.7801	17.1163
12 h after light	16.5484	13.3787	19.7181
4 h after dark	16.6834	16.476	16.8908
8 h after dark	12.97355	10.9715	14.9756
12 h after dark	15.838450000000002	15.6514	16.0255