The accuracy calculated by many apps in the market is based on a single frequency satellite system, whose accuracy values are converted from the HDOP values. The accuracy value of dual-frequency GNSS receivers (P-7 Pro, P-10 Pro) can not simply be converted this way, (The coordinate reading of those apps are accurate though. ) so please do not rely on those accuracy readings.
To properly test the accuracy of P-7 Pro, please follow the below "Columbus" official instruction. This instruction apply to P-10 Pro as well.