The script which makes these graphs takes about 2 hours to run. The script gets its data direct from the NOAA temperature stations. The script eliminates decommissioned temperature stations. The script also performs statistics on each station data and compares that data to surrounding temperature stations data to approve it. Worldwide there exists 9800 temperature stations. The script makes the graphs after collecting the data on the 9th of each month. Soon we will make a button you can click and run the data. Then check data worldwide for your closest latitude and verify its true. We make no guarantee of NOAA temperature station data accuracy, Neither does NOAA.