condition	mean	min	max
0 h after light	8.384979999999999	7.34422	9.42574
4 h after light	11.33344	8.26068	14.4062
8 h after light	18.09815	15.9914	20.2049
4 h after dark	21.646050000000002	20.0574	23.2347
8 h after dark	19.9296	17.6827	22.1765
12 h after dark	10.327964999999999	8.89013	11.7658