Hi, all Does the SurfArea in the lh.aparc.a2009s.stats, as presented below(red color), calculated based on white matter surface or pial surface? any suggestions appreciated.

# TableCol 10 Units unitless # ColHeaders StructName NumVert SurfArea GrayVol ThickAvg ThickStd MeanCurv GausCurv FoldInd CurvInd G_and_S_frontomargin 1518 988 2359 2.111 0.655 0.176 0.120 48 7.0 G_and_S_occipital_inf 1831 1257 3077 2.091 0.586 0.182 0.077 40 5.8