condition mean min max 4 h after light 3392.197994 3196.234418 3588.16157 8 h after light 3258.2446195 2939.847441 3576.641798 12 h after light 3921.8992344999997 3826.339681 4017.458788 4 h after dark 3980.2843775 3968.449339 3992.119416 8 h after dark 3527.9323185000003 3134.254042 3921.610595 12 h after dark 3850.637574 3850.637574 3850.637574