condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0280924 0.0 0.0842772 9 h after light 0.0 0.0 0.0 12 h after light 0.020788975 0.0 0.0831559 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.13836733333333334 0.0 0.281777 12 h after dark 0.618662 0.318105 0.919219