Be CSI an omission or not, examination of
those graphics suggests the size of the CSI effect AD1000 to AD2000 amounts to +2 Wm ^ -2 insolation (+0.002 Wm ^ -2 / year) over high northern latitudes during the merry months of April & May and -2 Wm ^ -2 insolation -LRB--0.002 Wm ^ -2 / year) over higher northern latitudes during the jolly months of July & August.
Other designers have
suggested using
graphics to distinguish different information (boarding zones, seat numbers and flight time), reducing pass
sizes so they would fit neatly in your wallet or adding colors and a logo to the back.