Fig. 4From: Reconstruction of historical hygrometric time series for the application of the European standard EN 15757:2010 and its comparison with current time seriesHistorical time series (Lascar dataloggers) (since October 2017, in red) already reconstructed and CC sensors time series (since January 2021, in blue) over time. The period between May 2019 and January 2021 is not displayed to better appreciate fluctuationsBack to article page