Definition
This variable lists a numeric variable indexing apartments within buildings. In reality, apartments within the same building shared the same street number, the source distinguished apartments with letters. In order to make this variable numeric, we have converted the alphabetic suffix to numbers, so that A=1, B=2, C=3 and so forth. The last digit of this variable denotes a letter in the original 1900 census. Therefore, 020 would mean the apartment had no suffix, 021 would mean the apartment number is 02A, and 122 would mean the apartment recorded in the Norwegian 1900 census is 12B. The building numbers (without the apartment list numbers) are listed in variable NO00A013.
This variable was only collected within towns. It is zero outside towns. Towns can be distinguished in the 1900 Norwegian census by using the variable NO00A004.