condition mean min max 4 h after light 1.92791 1.59659 2.34619 8 h after light 1.5383063333333333 0.482809 2.58186 12 h after light 1.5926399999999998 0.97366 2.26767 4 h after dark 2.94169 2.05117 4.20553 8 h after dark 3.52729 2.80273 4.28134 12 h after dark 4.373143333333333 4.15764 4.56013