condition	mean	min	max
4 h after light	20.503149999999998	16.2635	24.7428
8 h after light	15.98505	14.831	17.1391
12 h after light	12.86965	12.8402	12.8991
4 h after dark	13.369466666666666	12.1518	14.3003
8 h after dark	21.750966666666667	19.3653	24.9878
12 h after dark	15.472880000000002	9.36194	20.6306