condition mean min max 4 h after light 2192.5617525 1516.634367 2868.489138 8 h after light 1763.853982 1549.629753 1978.078211 12 h after light 1393.801998 1371.833478 1415.770518 4 h after dark 2028.537712 1458.001288 2599.074136 8 h after dark 2963.4916255 2163.514236 3763.469015 12 h after dark 1652.782743 1652.782743 1652.782743