condition mean min max 4 h after light 7136.5 7136.5 7136.5 8 h after light 8300.599999999999 8109.4 8491.8 12 h after light 8478.3 8275.0 8681.6 4 h after dark 8213.95 8093.2 8334.7 8 h after dark 7755.7 7198.9 8312.5 12 h after dark 7574.15 6950.5 8197.8