condition	mean	min	max
4 h after light	7.6413885	6.960102	8.322675
8 h after light	8.144518	7.459883	8.829153
12 h after light	8.626456999999998	8.391091	8.861823
4 h after dark	8.3228625	8.308071	8.337654
8 h after dark	7.755343	7.482605	8.028081
12 h after dark	8.446746	8.446746	8.446746