condition mean min max 4 h after light 487.7323295 391.309525 584.155134 8 h after light 404.031923 355.442612 452.621234 12 h after light 440.788641 432.000654 449.576628 4 h after dark 412.67370800000003 395.153281 430.194135 8 h after dark 428.590354 388.756624 468.424084 12 h after dark 517.675573 517.675573 517.675573