SRB impact statistics at the GPS L1 frequency in terms of signal fading (top panel), reduction in the number of available satellites (middle panel), and GDOP degradation (bottom panel). The signal fade statistics are shown as a box plot for each SRB (see text for details). The reduction in the number of available satellites and the GDOP degradation are presented as stacked bar plots showing the percentage of stations affected at different degradation levels. The SRBs are sorted with decreasing intensity on the x-axis (see Table 1 for SRB details).