condition	mean	min	max
4 h after light	8.377353500000002	8.182835	8.571872
8 h after light	8.654563	7.640864	9.668262
12 h after light	8.308348500000001	8.153935	8.462762
4 h after dark	8.134343999999999	7.582896	8.685792
8 h after dark	8.030904	7.943543	8.118265
12 h after dark	9.124178	9.124178	9.124178