condition mean min max 4 h after light 781.5024005 761.244252 801.760549 8 h after light 860.9478895 837.693595 884.202184 12 h after light 904.5014945 856.386317 952.616672 4 h after dark 1012.4494375 893.738331 1131.160544 8 h after dark 1058.651285 1002.015844 1115.286726 12 h after dark 790.467125 790.467125 790.467125