condition	mean	min	max
4 h after light	20.25835	18.1129	22.4038
8 h after light	18.791	15.6408	21.9412
12 h after light	17.392699999999998	16.4608	18.3246
4 h after dark	18.1312	16.8888	19.142
8 h after dark	24.82593333333333	19.994	28.3568
12 h after dark	19.646466666666665	18.8988	20.0996