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 0.0168369 0.0 0.0505107 12 h after light 0.0162111 0.0 0.0486333 3 h after dark 0.022906933333333334 0.0 0.0687208 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0