condition mean min max 4 h after light 7.360645 6.53908 8.18221 8 h after light 7.181570000000001 6.59083 7.77231 12 h after light 6.79069 6.43406 7.14732 4 h after dark 8.125293333333333 7.81553 8.64585 8 h after dark 8.198636666666667 7.67355 9.23511 12 h after dark 9.396686666666668 8.87845 9.91753