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 0.0 0.0 0.0 12 h after light 0.0314192 0.0 0.0942576 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0320317 0.0 0.0960951 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0