historic data format issue

[pavank]

2019-01-02T15:26:00+05:30,954.05,954.05,954.05,954.05,30
2019-01-02T15:28:00+05:30,954.05,954.05,954.05,954.05,4
2019-01-02T15:30:00+05:30,969.00,969.00,959.30,959.30,352019-01-02T15:30:00+05:30,969.00,969.00,959.30,959.30,35

@admin duplicate data at session end and no separator