condition	mean	min	max
4 h after light	6.645606666666667	6.56256	6.7824100000000005
8 h after light	6.56816	6.34149	6.94638
12 h after light	6.500813333333333	6.29948	6.801069999999999
4 h after dark	6.824636666666667	6.6466	6.96893
8 h after dark	7.112773333333334	7.04143	7.1559800000000005
12 h after dark	7.614339999999999	7.19868	8.128589999999999