condition mean min max 4 h after light 783.572234 739.385903 827.758565 8 h after light 928.2363655 903.076395 953.396336 12 h after light 949.222411 911.048217 987.396605 4 h after dark 1202.5048135 939.296283 1465.713344 8 h after dark 1033.9023735 784.389821 1283.414926 12 h after dark 715.734354 715.734354 715.734354