table->summary[row].non_missing;
tab_double (t, 1, row + heading_rows,
0, table->summary[row].non_missing, NULL, RC_INTEGER);
tab_text_format (t, 2, row + heading_rows,
table->summary[row].non_missing;
tab_double (t, 1, row + heading_rows,
0, table->summary[row].non_missing, NULL, RC_INTEGER);
tab_text_format (t, 2, row + heading_rows,