Figure 4
From: Monitoring soil radon during the 2016–2017 central Italy sequence in light of seismicity
Time series of daily-averaged soil radon concentration (Bq m−3) from NRCA (top) and CTTR (bottom) stations, from August 2016 to February 2017. Solid and dashed blue lines indicate raw data and data corrected for the effect of precipitations (mm, light blue bars), respectively. Green lines represent the time of occurence of the four Mw ≥ 5.5 earthquakes (yellow stars) of the central Italy seismic sequence.
