condition	mean	min	max
0 h after light	17.449350000000003	16.678	18.2207
4 h after light	15.18385	13.5843	16.7834
8 h after light	17.1307	15.8681	18.3933
4 h after dark	15.34375	13.4883	17.1992
8 h after dark	9.82768	9.61176	10.0436
12 h after dark	12.759250000000002	10.6125	14.906