From the way the numbers are presented it is guessed that you are looking at an index for the 1790 and 1800 censuses that contain an abstact of the census enumerations. If you had the actual population schedules, the column headings would have provided the information.
The headings for the 1790 census by column are:
1. Free white males of 16 years and upwards including heads of families. (In your example - 1)
2. Free white males under 16 years. (In your example - 2)
3. Free white females including heads of families. (In your example - 5)
4. All other free persons. (In your example - none)