condition	mean	min	max
4 h after light	20.401674	17.579283	23.224065
8 h after light	20.369045999999997	18.23735	22.500742
12 h after light	16.6679205	15.879084	17.456757
4 h after dark	16.9456295	13.872193	20.019066
8 h after dark	16.6015105	14.300031	18.90299
12 h after dark	31.195591	31.195591	31.195591