condition mean min max 4 h after light 9.83744 9.56188 10.113 8 h after light 5.372235 5.20326 5.54121 12 h after light 3.047425 2.64263 3.45222 4 h after dark 3.8134550000000003 3.51951 4.1074 8 h after dark 3.08347 3.01089 3.15605 12 h after dark 4.51182 4.47239 4.55125