condition mean min max 4 h after light 263.6 263.6 263.6 8 h after light 270.65 223.2 318.1 12 h after light 369.1 339.6 398.6 4 h after dark 390.5 327.8 453.2 8 h after dark 440.1 377.2 503.0 12 h after dark 416.75 337.2 496.3