teqc -aoa tbY pgc20990.98t > pgc20990.obs
teqc -aoa tbYn pgc20990.98t > pgc20990.nav
teqc -aoa tbY +nav pgc20990.nav pgc20990.98t > pgc20990.obs
teqc +qc -plot -report pgc20990.obs > pgc20990.qc