condition	mean	min	max
4 h after light	7.75176	7.67698	7.8533100000000005
8 h after light	7.549383333333333	7.44429	7.605739999999999
12 h after light	7.407133333333334	7.32408	7.469460000000001
4 h after dark	7.6059133333333335	7.4649600000000005	7.79018
8 h after dark	7.62321	7.437239999999999	7.79678
12 h after dark	7.609936666666666	7.492889999999999	7.73843