condition mean min max 4 h after light 2.230095 2.20466 2.25553 8 h after light 3.179505 2.92235 3.43666 12 h after light 3.99285 3.88838 4.09732 4 h after dark 6.3914550000000006 6.20272 6.58019 8 h after dark 4.5676000000000005 4.36264 4.77256 12 h after dark 3.934015 3.84595 4.02208