condition	mean	min	max
4 h after light	7.561736666666667	7.40067	7.663530000000001
8 h after light	7.726586666666666	7.56283	7.9801899999999995
12 h after light	7.6271233333333335	7.508430000000001	7.824210000000001
4 h after dark	7.60997	7.341239999999999	7.919230000000001
8 h after dark	7.5425466666666665	7.39416	7.66642
12 h after dark	7.503410000000001	7.442810000000001	7.5876600000000005