condition	mean	min	max
4 h after light	7.242613333333334	7.0183100000000005	7.43783
8 h after light	7.340326666666667	7.1963	7.460160000000001
12 h after light	7.60719	7.4645600000000005	7.8179300000000005
4 h after dark	7.48991	7.34633	7.75795
8 h after dark	7.2985533333333334	7.04162	7.707389999999999
12 h after dark	6.256913333333333	5.77283	6.6747