condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0160226 0.0 0.0480678 12 h after light 0.0242584 0.0 0.0727752 3 h after dark 0.0 0.0 0.0 6 h after dark 0.01837276666666667 0.0 0.0551183 9 h after dark 0.020751866666666667 0.0 0.0622556 12 h after dark 0.025523266666666666 0.0 0.0765698