tab_text (t, nc++, i + 1, TAT_PRINTF, "%g", dv->valid);
if (dsc->format == DSC_SERIAL)
tab_text (t, nc++, i + 1, TAT_PRINTF, "%g", dv->missing);
tab_text (t, nc++, i + 1, TAT_PRINTF, "%g", dv->valid);
if (dsc->format == DSC_SERIAL)
tab_text (t, nc++, i + 1, TAT_PRINTF, "%g", dv->missing);