How to seperate the array...waiting to solve it

Question

 Help & guide som eidea to solve this array form..Thanks by advance

 

 

var arr1 = ['{"0":"8.773825","1":"11.021402","2":"10.966872","3":"11.747779","4":"11.571063"}'];

var arr2 = ['{"0":"78.116108","1":"76.908526","2":"78.061974","3":"75.48959","4":"78.208165"}'];

let arr3 = [];

 

I need to get the value lik e

 

value of  0,0

              1,1

              2,2  seperately