Averett's OIRE (Office of Institutional Research & Effectiveness) provides library access to IPEDS for the annual Academic Libraries Survey.
Counting Opinions sends the library keyholder an invitation for ACRL Statistics.
Complete ACRL first, if possible. The IPEDS Academic Libraries Survey should flow from that. (I transcribed rather than uploaded ACRL data to IPEDS.)
Note: The IPEDS "allocation factor" is the ratio of traditional and non-traditional FTEs reported to SCHEV (see calculation for ACRL line 45, contributions from external consortia). In FY2018, this was 64% traditional / 36% nontraditional. - E.Day 12/18