| PVraw(t) | no processing other than spatial averaging over ROI or coarse grid cell; |
| PVAC(t) | the mean over time of PVraw(t) is subtracted (= PVraw(t) minus DC); or |
| PVBP(t) | band-pass filtered PVraw(t) signal. |
| PVraw(t) | no processing other than spatial averaging over ROI or coarse grid cell; |
| PVAC(t) | the mean over time of PVraw(t) is subtracted (= PVraw(t) minus DC); or |
| PVBP(t) | band-pass filtered PVraw(t) signal. |