Climatological Data of World Cities
the climatological normals for temperature, sunshine hours, and precipitation of selected world cities where warm-season (C4) grasses are usually grown; these data are from the climatological normal tables on the Hong Kong Observatory website (http://www.hko.gov.hk/) and the bubble charts were created using the ggplot2 package in R (http://had.co.nz/ggplot2/)
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