condition	mean	min	max
4 h after light	17.5607	13.4984	21.623
8 h after light	9.070415	8.10633	10.0345
12 h after light	6.517085	5.26854	7.76563
4 h after dark	6.030856666666667	5.62296	6.5286
8 h after dark	10.78987	9.03731	11.9269
12 h after dark	13.7775	11.1803	15.0986