condition	mean	min	max
4 h after light	6.901799999999999	6.734369999999999	7.146889999999999
8 h after light	6.7301866666666665	6.603789999999999	6.82705
12 h after light	6.59249	6.28642	6.9244699999999995
4 h after dark	6.642276666666667	6.591710000000001	6.72549
8 h after dark	6.5655133333333335	6.29625	6.783530000000001
12 h after dark	6.651576666666667	6.564030000000001	6.7352300000000005