IllegalMonthError though there is no month attribute

[agnim25]

When I run describe_dataset_in_correlated_attribute_mod, the first value of the first DataFrame column of string objects is being read as the month. For a given record, the attributes are

• PUMA (str) — Identifies the Public Use Microdata Area (PUMA) where the housing unit of the record was located.
• YEAR (uint32) — Reports the four-digit year when the household was enumerated or included in the survey.
• SEX (uint8) — Reports whether the person was male or female.
• AGE (uint8) — Reports the person's age in years as of the last birthday.
• sim_individual_id (int) — Unique, synthetic ID for the notional person to which this record was attributed.

[agnim25]

I think I found it, since the values for PUMA contain a dash, the values were becoming confused for dates. Should be fine.