condition mean min max 3 h after light 1451.4233333333334 1277.3 1590.4 6 h after light 308.79200000000003 251.145 388.274 9 h after light 77.00566666666667 64.3823 91.064 12 h after light 665.0404500000001 32.997 2457.07 3 h after dark 490.2393333333333 440.391 557.293 6 h after dark 616.494 522.767 727.102 9 h after dark 1797.27 1542.25 1973.6 12 h after dark 2763.59 2578.49 2948.69