_mode_c_node->setDoubleValue(100 * SGMiscd::round(raw_PA/100));
_kollsman = fgGetLowPass(_kollsman, _altimeter.kollsman_ft(setting), trat);
if (_quantum)
_mode_c_node->setDoubleValue(100 * SGMiscd::round(raw_PA/100));
_kollsman = fgGetLowPass(_kollsman, _altimeter.kollsman_ft(setting), trat);
if (_quantum)