condition mean min max 4 h after light 2.918425 2.77764 3.05921 8 h after light 3.023125 2.75553 3.29072 12 h after light 4.332355 3.83015 4.83456 4 h after dark 6.1383600000000005 5.26395 7.01277 8 h after dark 4.6988199999999996 4.37677 5.02087 12 h after dark 4.019045 3.90338 4.13471