Fig. 11

Transfer functions comparing stations 13 (\({{\mathbf{E }}}_{B }\)) and 04 (\({{\mathbf{E }}}_{M }\)) between days 193 and 197. The x-axis shows the period in seconds, and the grey shaded area represents the approximate dead band. The blue horizontal lines represent the identity matrix transfer functions. The pink shaded region represents a noise window of \(\pm \,1\)%