condition mean min max 0 h after light 0.885166 0.884377 0.885955 4 h after light 1.7461 1.63991 1.85229 8 h after light 3.745135 3.32165 4.16862 4 h after dark 2.55577 2.23035 2.88119 8 h after dark 1.6101450000000002 1.32434 1.89595 12 h after dark 1.121447 0.850974 1.39192