condition mean min max 0 h after light 1.253605 0.0 2.50721 2 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0 4 h after dark 1.16156 0.0 2.32312 8 h after dark 0.0 0.0 0.0 12 h after dark 1.19546 0.0 2.39092