condition mean min max 4 h after light 1203.933923 689.548581 1718.319265 8 h after light 997.6331325 775.047718 1220.218547 12 h after light 1050.4307469999999 1024.75606 1076.105434 4 h after dark 1494.5411299999998 891.610018 2097.472242 8 h after dark 1866.11534 1723.942457 2008.288223 12 h after dark 1732.078211 1732.078211 1732.078211