condition	mean	min	max
4 h after light	8.79899	8.6987	8.89063
8 h after light	8.81952	8.71948	8.94485
12 h after light	8.965446666666667	8.926969999999999	9.03539
4 h after dark	9.105753333333334	9.05739	9.18191
8 h after dark	9.08968	8.96898	9.26038
12 h after dark	8.97729	8.952689999999999	8.99509