condition mean min max 4 h after light 256.6 256.6 256.6 8 h after light 239.3 203.0 275.6 12 h after light 284.6 190.3 378.9 4 h after dark 312.2 258.7 365.7 8 h after dark 246.85 191.0 302.7 12 h after dark 226.75 219.5 234.0