Index , match , table value look up,

I have a Table Margin with intervals from F2:P2 ( 100, 200,300,400, up to 1200).
A1 is the Criterias A2: A12 ( 1200, 100, 300, 700 )
IF C2 is 0.50 which falls in the criteria of 1200 the point that should be from P3= 1

IF C12 is 5 which falls in the criteria of 1000 the point whould allocated is O12=9

I have tried the following formula but gives me #N/A

=INDEX($F$2:$P$18,MATCH(A2,$E$3:$E$18,0),MATCH(C2,$F$2:$P$18,0)) = #N/A