score:1

Accepted answer

CSV files work best when there is a fixed number of columns in each row. For your data, can you use a JSON file instead? There are different ways you could represent your data as JSON, for example, you could use an object with each property being an array:

{
    "00:00 to 00:15": [],
    "05:00 to 05:15": ["NA", "NA", "NA", "EU", "AS", "EU"]
}

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