Optimize ground motion plots
It would be good to optimize the way the ground motion plots are plotted.
1- I don't think the raw output data is that useful (the blrms is good enough).
2- I would assemble the plots differently, rather by frequency band, like the following:
a- L1:ISI-GND_STS_{ETMY,ETMX,ITMY}_{X,Y,Z}_BLRMS_30M_100M
b- L1:ISI-GND_STS_{ETMY,ETMX,ITMY}_{X,Y,Z}_BLRMS_100M_300M
c- L1:ISI-GND_STS_{ETMY,ETMX,ITMY}_{X,Y,Z}_BLRMS_300M_1
d- L1:ISI-GND_STS_{ETMY,ETMX,ITMY}_{X,Y,Z}_BLRMS_1_3
If too crowded, we can remove one of the end stations.