examinations for tabulating equipment operator, $2,960 and $3,175 a year (grades GS-2 and GS-3), tabulating equipment operation supervisor, $3,415 to $4,525 a year (grades GS-4 to GS-7), tabulation project planner, $3,670 and $4,525 a year (grades GS-5 and GS-7), tabulating machine operator, $2,960 and $3,175 a year (grades GS-2 and GS-3), tabulating machine operation supervisor, $3,415 to $4,525 a year (grades GS-4 to GS-7), tabulation planner, $3,415 to $4,080 a year (grades GS-4 to GS-6), announcement 64.