However 7 years later , after the 2013 nuclear test , the Federal Institute for Geosciences and Natural Resources , a state-run geology research institute in Germany , estimated the yield ranging at minimum of 700 tons to the max of 2 kilotons and the 2009 test ranges from minimum of 5 kilotons to the max of 12 kilotons instead with relevant statistics
2013 nuclear test
2013 North Korean nuclear test
2006 North Korean nuclear test