Well, looking at your image, you seem to constantly write your results in the same array element i.e. row 0, column 2. I'm assuming that you want to populate the array with ALL you measurment results, and if thats the case, you simply use the while loop index (that little blue "i" on bottom left of your while loop) as your "row" position. And if you also want to increment the column, you just create a shift register that increments by 1 and feed that into your column position.
But again, lookingat your image, you seem to run the "Process 1" state only once, and then it goes back to idle. So maybe just the row index would do.
