condition mean min max 4 h after light 1297.8 1297.8 1297.8 8 h after light 1213.75 1129.8 1297.7 12 h after light 1776.55 1098.1 2455.0 4 h after dark 1765.65 1189.2 2342.1 8 h after dark 1500.5 1164.3 1836.7 12 h after dark 1588.6 1578.1 1599.1