tertiary MMC bonus ?

DIM 127|128_2= POSITION OF CIRCLE CIR_128_1 UNITS=IN ,$
GRAPH=OFF TEXT=OFF MULT=30.00 OUTPUT=BOTH FIT TO DATUMS=OFF DEV PERPEN CENTERLINE=OFF DISPLAY=DIAMETER
AX NOMINAL +TOL -TOL BONUS MEAS DEV OUTTOL
X -3.7976 -3.7973 0.0003
Y 11.0041 11.0022 -0.0019
DF 0.2570 0.0060 0.0030 0.0028 0.2568 -0.0002 0.0000 --#------
D1 PLANE DATUM_A AT RFS
D2 19.7410 0.0030 0.0030 19.7410 CIRCLE DATUM_B AT RFS
D3 0.2570 0.0060 0.0030 0.0138 0.2578 CIRCLE DATUM_C AT MMC
TP MMC 0.0100 0.0166 0.0039 0.0039 0.0000 -#-------
END OF DIMENSION 127|128_2

Can anyone explain why the datum C bonus is .0138 and not .0038 why is it adding .010?