condition mean min max 4 h after light 75.72665 68.223 83.2303 8 h after light 49.3293 48.4469 50.2117 12 h after light 36.51415 35.2176 37.8107 4 h after dark 46.9409 40.7492 50.8252 8 h after dark 76.3073 72.4313 83.0431 12 h after dark 86.3509 82.7318 90.401