condition mean min max 4 h after light 157.321033 135.385903 179.256163 8 h after light 157.6704045 151.093371 164.247438 12 h after light 145.72054 137.485026 153.956054 4 h after dark 168.911676 150.581615 187.241737 8 h after dark 157.8342755 144.841661 170.82689 12 h after dark 145.418641 145.418641 145.418641