condition mean min max 4 h after light 529.0279805 425.378736 632.677225 8 h after light 588.922816 515.094636 662.750996 12 h after light 658.330917 608.314532 708.347302 4 h after dark 520.203957 307.806021 732.601893 8 h after dark 561.9991255 408.30898 715.689271 12 h after dark 502.341419 502.341419 502.341419