condition	mean	min	max
4 h after light	21.33395	18.1366	24.5313
8 h after light	25.631349999999998	24.793	26.4697
12 h after light	31.901600000000002	28.7409	35.0623
4 h after dark	39.8819	38.123	41.6408
8 h after dark	35.1659	34.1601	36.1717
12 h after dark	27.79195	26.7011	28.8828