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Preliminary Active RegionChromosphericLower transition-regionIntensity (erg s^-1 cm^-2 A^-1 sr^-1)1 .10 6 SRPM QSH 1004SUMER QSSUMER Plage1 .10 51 .10 41 .10 310010Intensity (erg s^-1 cm^-2 A^-1 sr^-1)1 .10 6 SRPM QS1 .10 5H 1004SUMER QSSUMER Plage1 .10 41 .10 31001011250 1300 1350 1400 1450 15001700 750 800 850 900 950 1000 1050 1100 1150 1200Wavelength (A)Wavelength (A)The UV chromospheric continuum m<strong>at</strong>ches fine inmodel P. However, improvement is needed in thelower transition-region of the active region models.