condition mean min max 4 h after light 405.8078435 393.537476 418.078211 8 h after light 590.937224 582.985963 598.888485 12 h after light 639.0667805 556.462826 721.670735 4 h after dark 1040.188727 766.068474 1314.30898 8 h after dark 1078.4039435 694.960446 1461.847441 12 h after dark 623.561359 623.561359 623.561359