Not all RuuviTags, e.g., Pro, support all 3 basic measurements (temperature, pressure, and humidity) as the original RuuviTag does. The Ruuvi Station web interface assumes, however, that they all are there, and it invents values for the missing measurements.
For example, my Pro shows RH of 163,84 % and P of 1155,35 hPa. Could those fake be removed?