condition	mean	min	max
0 h after light	18.615850000000002	18.5186	18.7131
4 h after light	17.1955	16.5995	17.7915
8 h after light	18.2824	17.6008	18.964
4 h after dark	18.16315	17.9873	18.339
8 h after dark	21.019	19.0463	22.9917
12 h after dark	17.70935	16.4467	18.972