In order to determine if 2012 was warmer than 1934, the last four days of the year are critical.
Of the 821 GHCN HCN stations continuously active since 1920, only 27 have any data for those days, and only 3 have complete data. By contrast, all 821 have January 2013 data.
The last four days of 2012 were very cold. How did NOAA determine the 2012 temperature to .01 degrees, when they are missing 1% of the data which averaged at least five degrees below normal?
Answer : corrupt junk