whats the difference between CQC SRSS ABS 10PCT SHEAR in output anl file ?

I define a SPECTRUM data as below

SPECTRUM CQC X 1 ACC SCALE 9.8 DAMP 0.03
0 0.072; 0.1 0.185; 0.4 0.185; 0.7 0.1092; 1.05 0.0746; 1.35 0.0588;
1.7 0.0474; 2 0.0406; 2.35 0.0393; 2.7 0.038; 3 0.0368; 3.35 0.0355;
3.65 0.0343; 4 0.033; 4.35 0.0316; 4.65 0.0305; 5 0.0291; 5.3 0.028;
5.65 0.0266; 6 0.0253;

after staad finished the analysis,in its output anl file,i got the base shear result as below

CQC MODAL COMBINATION METHOD USED.
DYNAMIC WEIGHT X Y Z 2.096803E+04 0.000000E+00 2.096803E+04 KN
MISSING WEIGHT X Y Z -2.606766E+03 0.000000E+00 -2.542104E+03 KN
MODAL WEIGHT X Y Z 1.836126E+04 0.000000E+00 1.842592E+04 KN

499 0.00 0.00 0.00 87.568 0.000 87.876 0.00 0.00 0.00
500 0.00 0.00 0.00 87.568 0.000 87.876 0.00 0.00 0.00
---------------------------
TOTAL SRSS SHEAR 1077.12 0.00 0.00
TOTAL 10PCT SHEAR 1277.83 0.00 0.00
TOTAL ABS SHEAR 2784.69 0.00 0.00
TOTAL CQC SHEAR 1264.07 0.00 0.00

there are 4 base shear data listed above,now i am puzzled which one will be the corrected one to be used to design the foudation area ?

anyone can help me? thanks