Astronomers adopted Herschel's "days of the Julian period" in the late nineteenth century, but used the meridian of Greenwich instead of Alexandria, after the former was adopted as the Prime Meridian after the International Meridian Conference in Washington in 1884.
NOx conc, COconc, HCconc, NMHCconc, = integroinnista (pakollinen NOx:n ja HC:n osalta)tai pussimittauksesta saadut syklin aikaiset keskimääräiset taustakorjauskonsentraatiot, ppmWikiMatrix WikiMatrix