diff --git a/Code-C/power b/Code-C/power
index 2fea944..974d246 100755
Binary files a/Code-C/power and b/Code-C/power differ
diff --git a/Code-C/power.c b/Code-C/power.c
index 78021db..0eff51c 100644
--- a/Code-C/power.c
+++ b/Code-C/power.c
@@ -11,16 +11,17 @@ void power(int **p, double a[]){
     printf("temps : %f\n",temps);*/
     
     //Fill array with the power of the signal for each captor
-    for(int i = 1; i < nCol; i++){
+    for(int i = 0; i < nCol-1; i++){
         int j = 0;
         a[i] = 0;
         while(j < nRow-1){
-            double aire  = ( pow(p[j][i],2) + pow(p[j+1][i],2) ) / 2 * periode;
+            double aire  = ( pow(p[j][i+1],2) + pow(p[j+1][i+1],2) ) / 2 * periode;
             //printf("aire [%d,%d] : %f\n",j,i,aire);
             a[i] += aire;
             j++;
         }
         a[i] *= temps;
+        //printf("%f\n", a[i]);
     }
 }
 int main(int argc , char** argv){