condition	mean	min	max
4 h after light	4.46865	2.47219	6.46511
8 h after light	4.09184	3.41105	4.77263
12 h after light	16.6578	15.3082	18.0074
4 h after dark	25.697133333333333	24.0615	26.838
8 h after dark	18.7442	15.2175	20.9108
12 h after dark	6.009923333333333	5.27802	7.04055