The P2VM (Pixel to Visibility Matrix)  is used to calibrate the science data. The pipeline product provides also some QC parameters which are used to monitor the Instrumental transfer function and the offset between the photometric beams.
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In Low resolution JHK, the Instrumental Visibility is calculated across the full JHK spectrum (this plot) or in the individual bands (J, H and K). The band K,H,J Instrumental Visibilities are shown in the HC plots: K_P2VM_LJHK, H_P2VM_LJHK, J_P2VM_LJH.
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The HC plot "with_temp"  is a long range plot where the temperature inside the
lab is also plotted.  This could show some correlation etween internal
Visibility and temperature (see also environment HC plots under Non Daily)