The Positioning and Measurement Stream has published a white paper describing the current state of play of NRTK GNSS in NZ. Worth a read (even if I do say so myself). The paper is available on the NZIS website here. If you can't access it, let me know and I'll forward a copy. The paper was circulated to the providers for comment, and we are interested to hear your thoughts on how this technology is working out.