Not produced

M2 of the physical-constants chapter compares the move between two consecutive editions with their uncertainties. The H0 analogue, a pair of consecutive estimates, is only a publication order: several estimates share a year, so how the pairs are joined is arbitrary, and in the stage-1 sensitivity tables the verdict moved between "above the normal expectation" and "overlapping" depending on whether pairs were pooled or grouped by type code. Pairing only the follow-ups of the same team would come closest to M2, but neither compilation has a column that identifies teams. The chapter therefore leaves H2 empty and publishes no number under it; the numbering stays so that H1, H3 and H4 visibly correspond to M1, M3 and M4.

The gist of the stage-1 sensitivity tables: in Huchra's list the share of consecutive pairs with |z| > 2 lay above the normal expectation (4.6%) when the list was pooled, and its interval overlapped the expectation when pairs were grouped by type code. The conclusion depends on the grouping, so no number is published.