condition	mean	min	max
4 h after light	7.452999999999999	7.37972	7.53224
8 h after light	7.893086666666666	7.85087	7.951689999999999
12 h after light	8.580663333333334	8.41315	8.75958
4 h after dark	7.871563333333333	7.72012	7.95653
8 h after dark	7.70563	7.612010000000001	7.80709
12 h after dark	7.4681500000000005	7.409689999999999	7.57415