10. QA CMAQ# Quality Assurance: Comparing the output of two CMAQ runs. 10.1. Quality Assurance Checks for Successful CMAQ Run on CycleCloud 10.1.1. run m3diff to compare the output data for two runs that have different values for NPCOL 10.1.2. If CMAQ were compiled with -march=native, then you would see differences in the output if NPCOL was different, see previous version of this tutorial for more information 10.2. R analysis scripts 10.2.1. Run the following R script to create box plots and spatial plots showing difference between two CMAQ runs. 10.3. Run Jupyter Notebook to analyze difference between with DESID Emissions and the base case (no emission reduction)