Examples of the [CII] observed grid in two different subregions of the entire observed map. The beam size at this frequency is represented by the circle’s size. The H polarization (solid line) and V polarization (dashed line) spectra are shown. The slight misalignment between the beams is −1.0′′ in the Y and 0.0′′ in the Z focal plane coordinates of the HIFI instrument. The OTF map with load chop and position-switch reference observing mode used for the high frequency lines undersampled the observed maps.
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