O2 A-band line parameters to support atmospheric remote sensing Part II by David A. Long and others 2026-10-20
Primary manuscript: tsapps.nist.gov/publication/get_pdf.cfm?pub_id=907932
Full title: O2 A-band line parameters to support atmospheric remote sensing. Part II: The rare isotopologues. Section 3, manuscript page 4, distinguishes rotational from total and states the odd- nuclear-spin statistical restriction for the dominant oxygen isotopologues.