The only single digit value > 0 of incother in the 2013 ACS IPUMS data is 4. Is this an error?

USA
1

The only single digit value > 0 of incother in the 2013 ACS IPUMS data is 4. Is this an error?

Minimum Other Income.xlsx (14.9 KB)

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Sorry; no response needed. 4 represents the range of 1-7.