condition	mean	min	max
0 h after light	18.79285	16.878	20.7077
4 h after light	29.8805	27.2984	32.4626
8 h after light	30.04525	28.5703	31.5202
4 h after dark	33.59365	32.4077	34.7796
8 h after dark	24.47925	23.7201	25.2384
12 h after dark	21.5153	19.3173	23.7133