The crystal does have a single P2 lattice, holding ~6% of each frame's spots
on top of ice and protein powder; XDS indexes it with the ice rings excluded.
The reference is now that P2 run to 2.0 A instead of a failed P1 run, and the
set is renamed from aggregate to sparse.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>