Because we are back into the time of year when the ground motion can change a lot, I'm posting a quick reminder of what the blend filter low passes look like for the main two blends we use for horizontal dofs on the St1 of the ISI. Attached figure shows bode plots of the BSC St1 lowpasses on the right and the HAM St1 low passes on the left. Blue lines are the ~100mhz blends we use for the microseism states, red lines are the 250mhz blends we use for the "windy" states. The blends are the main component that changes between calm/windy and useism, I think we use the same sensor correction for both states. I won't go into detail about what these plots mean, this a iykyk kind of post. Sorry.