## 4 Results and Discussion
### Interactions Prior to the Seismic Event
(**B**) Comparison of the correlations between radon signals recorded by the probes and signals of tectonic activity in the rock mass observed on individual channels from 1 to 24 h after four seismic events, excluding correlation. Coefficients at a statistically insignificant level, i.e., <0.4. Correlation indicated with red line. Figure 21: **(A)** Comparison of the correlations between radon signals recorded by the probes and signals of tectonic activity in the rock mass observed on individual channels from 25 to 48 h, four seismic events, excluding correlation coefficients at a statistically insignificant level, i.e., <0.4. Correlation indicated with red line. **(B)** Comparison of the correlations between radon signals recorded by the probes and signals of tectonic activity in the rock mass observed on individual channels from 25 to 48 after four seismic events, excluding correlation coefficients at a statistically insignificant level, i.e., <0.4. Correlation indicated with red line. In the third interval block (49-72 h), the correlations were analyzed based on 888 data (approx. 46% of input set). Of these, 452 data points showed a positive correlation and 436 data points showed a negative correlation. Between 49 and 72 h prior to the seismic events, the signals recorded by the radon probes were correlated with the signals from each tectonic activity channel. A solely positive correlation was observed between the signals from probes 4, 5, and 6 and the signal on channel 1, as well as between the signals from probes 3, 4, and 5 and the signal on channel 3. Except for the signal from probe 4, which correlated with the signal on channel 3 (correlated between 56 and 62 h), the duration of the positive correlations for the remaining signals was similar at 24 h. Solely negative correlations, on the other hand, were observed between the signals from probes 2 and 6 and the signal from channel 2, and between the signals from probes 2 and 4 and the signal from channel 4. The duration of these correlations was also 24 h. In the case of the remaining sensors, the correlations were inconsistent. Such correlations were observed mainly for the signals from channels 2 and 4. Between 49 and 72 h, the signals from probes 2 and 5 were negatively correlated with the signal on channel 1 prior to event no. 1, and positively correlated prior to events no. 3 and 4. The signal from channel 4 was negatively correlated with the signals from probes 2, 3, 4, and 6 prior to events no. 2 and 3. In addition, the signal on channel 4 and the signals from probes 3 and 6 were positively correlated prior to event no. 4. The signal on channel 2 was positively correlated with the signals from probes 3, 5, and 6 prior to event no. 4 and negatively correlated prior to events no. 2 and 3 (Figure 22A). Figure 22: _Cont._  
The characteristics of the interactions between 73 and 96 h prior to the seismic events were analyzed based on 777 data points, i.e., 40.5% of the 1920-data set. Of the set, 18.5% (355 data) represented positive correlations, and 22% (422 data) represented negative correlations. Only positive correlations were observed for the signals on channels 1 and 3. The correlations for the signal from channel 1 and the signals from probes 2 and 4 had the longest duration of 24 h. This duration was shorter (only 6 h) for the signal on channel 3. This signal was positively correlated with that of probe 5. Solely negative correlations were observed between the signal from probe 4 and the signals from channels 3 and 4. In the first case, the correlation time was shorter--17 h. In the second case, the time was 24 h. The remaining correlations were both positive and negative. Typically, such correlations were observed for the signal on channel 2. Between 73 and 96 h prior to seismic events no. 1 and 4, the signals from probes 3, 4, and 6 were positively correlated with the signal from channel 2. However, this correlation was negative prior to event no. 2.