Open the resulting csv file in a text editor — not in Excel or something like that.
Copy the contents into the input area below. You don't have to remove headers, as only lines starting with a date and time (like '02/12/2018 - 18:59') will be processed. Please check whether each line indeed starts with a date, because some lesser editors do not correctly place the newlines.
Copy the resulting text from the output area below into your text editor.
Save the file as a csv file, for instance 'myweight.csv'.