condition mean min max 4 h after light 981.7991635000001 548.827809 1414.770518 8 h after light 1561.457349 1534.705219 1588.209479 12 h after light 1226.18354 991.415476 1460.951604 4 h after dark 787.2386205 706.6298 867.847441 8 h after dark 678.8643420000001 653.974813 703.753871 12 h after dark 468.8997 468.8997 468.8997