condition	mean	min	max
4 h after light	7.8724300000000005	7.39334	8.35152
8 h after light	8.02918	7.84889	8.20947
12 h after light	8.86941	8.77973	8.95909
4 h after dark	10.98955	10.3401	11.639
8 h after dark	12.081	12.0213	12.1407
12 h after dark	11.237649999999999	11.0415	11.4338