condition mean min max 4 h after light 642.3250255 551.548052 733.101999 8 h after light 592.5177905 557.847441 627.18814 12 h after light 542.815599 536.86068 548.770518 4 h after dark 533.5738005000001 442.583573 624.564028 8 h after dark 436.78394049999997 420.711365 452.856516 12 h after dark 841.193492 841.193492 841.193492