Here is my model
var oData = [{
"GroupName": "2017 Mar",
"SubGroupName": "SC",
"Values": "7"
}, {
"GroupName": "2017 Mar",
"SubGroupName": "SC",
"Values": "8"
}, {
"GroupName": "2017 Mar",
"SubGroupName": "SC",
"Values": "9"
}, {
"GroupName": "201...