condition mean min max 4 h after light 2171.281092 2122.19269 2220.369494 8 h after light 2217.758735 2191.06313 2244.45434 12 h after light 2239.2687955 2129.944493 2348.593098 4 h after dark 2178.334791 1881.85687 2474.812712 8 h after dark 2133.3535275 1485.551921 2781.155134 12 h after dark 2191.06313 2191.06313 2191.06313