Syntax:

$ ./vartools -l EXAMPLES/lc_list -header \
    -chi2 -ensemblerescalesig 3. -chi2

#Name Chi2_0 Weighted_Mean_Mag_0 SigmaRescaleFactor_1 Chi2_2 Weighted_Mean_Mag_2
EXAMPLES/1  34711.71793  10.24430   0.32888   3754.43599  10.24786
EXAMPLES/2   1709.50065  10.11178   0.34008    197.71560  10.11842
EXAMPLES/3     27.06322  10.16684   0.36339      3.57371  10.16674
EXAMPLES/4      5.19874  10.35137   0.35266      0.64655  10.35142
EXAMPLES/5      8.26418  10.43932   0.38819      1.24536  10.43964
EXAMPLES/6      3.94650  10.52748   0.40863      0.65899  10.52762
EXAMPLES/7     10.39941  10.56951   0.42085      1.84188  10.56968
EXAMPLES/8      4.19887  10.61132   0.42869      0.77164  10.61154
EXAMPLES/9      2.67020  10.73129   0.44677      0.53297  10.73140
EXAMPLES/10      3.72218  10.87763   0.48353      0.87025  10.87782

Transform the magnitude uncertainties for the light curves in the list EXAMPLES/lc_list. The -chi2 commands before and after -ensemblerescalesig are used to demonstrate that the chi^2 per dof values change, however, for this small set of light curves, which span a limited range of magnitudes and include several artificial variables, the -ensemblerescalesig command is not recommended. This command should only be used in cases where the light curves span a large range of magnitudes, and one can easily see that the "floor" in a magnitude-RMS plot falls well above the expected floor. The example here just illustrates the method of calling this procedure.