The REFMAC check is opt-in, so a battery run without --model-check has no
R-free pairs, and the axis range min()/max() over them crashed the script
before any figure was drawn. The R-free figure is now its own gnuplot block,
left out (with a line in summary.txt saying why) when there is nothing to
draw; d_min and the time figures are drawn as before.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SVmAWnzCmRKAXVUCdc4iNi