This link shows you the [popup url=”https://www.ibk.monitoring.ethz.ch/data-analysis/measurements/general-data/indoor-climate/trh_d/” height=”600″ width=”600″ scrollbars=”yes” alt=”popup”]location of the sensors on the D storey[/popup].
Not necessary as temperature and relative humidity are measured by the same sensors.

Relative humidity sensors of the D storey