condition mean min max 4 h after light 138.1 138.1 138.1 8 h after light 226.55 173.9 279.2 12 h after light 209.45 165.2 253.7 4 h after dark 206.95 152.2 261.7 8 h after dark 218.95 218.8 219.1 12 h after dark 301.55 288.3 314.8