Can you tell me what the Accuracy column means and how it works?

Can you tell me what the Accuracy column means and how it works? THANK YOU So much for this data. It is extremely helpful.

[Zeeshanahmad4]

I actually do not remember its been 5 years.

[AGenchev]

Yes, I can:
For many countries lat/lng are determined with an algorithm that searches the place names in the main geonames database using administrative divisions and numerical vicinity of the postal codes as factors in the disambiguation of place names. For postal codes and place name for which no corresponding toponym in the main geonames database could be found an average lat/lng of 'neighbouring' postal codes is calculated.
accuracy of lat/lng from 1=estimated, 4=geonameid, 6=centroid of addresses or shape
For India the lat/lng accuracy is not yet comparable to other countries.
Source: https://data.opendatasoft.com/explore/dataset/geonames-postal-code%40public/export/