condition mean min max 0 h after light 6.6135649999999995 6.02007 7.20706 2 h after light 8.32086 8.01148 8.63024 4 h after light 6.975345 6.82872 7.12197 8 h after light 6.967155 6.7263 7.20801 12 h after light 6.4519400000000005 6.15053 6.75335 2 h after dark 4.01997 3.39274 4.6472 4 h after dark 3.29549 2.92481 3.66617 8 h after dark 4.677770000000001 4.30633 5.04921 12 h after dark 5.52811 4.90268 6.15354