Exactly. A minimum of 3 reference stations are needed to generate VRS. Here in EUREF all were far away: stas (Stavanger) 143km, osls (Oslo) 301km and trds (Trondheim) 442km. This is an unfavorable situation in EUREF for this area of Norway.
This virtual session must be longer to receive such accuracy. EUREF has a disadvantage because the observations at the reference stations are in the interval of 30 seconds.
But our 15-minute Reach measurement is enough to get, as you can see, the high accuracy of the point’s location.
I did not check if there is any VRS generating service in Norway on request.
Included are the RINEX files used for the calculation.
15min.zip (572.2 KB)
vrs1.zip (171.1 KB)
Having VRS, there is no need for sofisticated postprocessing.