condition	mean	min	max
4 h after light	6.601116666666667	6.49301	6.762060000000001
8 h after light	6.78906	6.59045	7.06198
12 h after light	6.497626666666666	6.4306	6.626239999999999
4 h after dark	6.765193333333333	6.630660000000001	6.91205
8 h after dark	6.938969999999999	6.83817	6.990589999999999
12 h after dark	7.01496	6.9107199999999995	7.088010000000001