condition mean min max 2 h after light 0.907295 0.459447 1.94174 6 h after light 0.45216 0.125366 0.938915 10 h after light 1.0658338333333333 0.41294 1.73802 14 h after light 0.6752935 0.121845 1.41172 18 h after light 1.1051676666666668 0.576222 1.54601 2 h after dark 1.228584 0.57961 2.37639