The offline per-image scaling table had bare numeric columns. Prefix it with
a '#' comment header (image_number scale_G bfactor_Ang2 mosaicity_deg
wedge_deg cc_to_merge cc_n) so it is self-describing; numpy.loadtxt / gnuplot
skip the comment line, so existing consumers are unaffected.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>