condition	mean	min	max
4 h after light	7.3936166666666665	7.23577	7.628889999999999
8 h after light	7.385626666666667	7.2627	7.47813
12 h after light	7.16885	7.09594	7.28793
4 h after dark	7.23296	7.1185	7.366960000000001
8 h after dark	7.2191133333333335	6.835030000000001	7.45362
12 h after dark	7.29271	7.145689999999999	7.382969999999999