Ambient noise station-correlation spectra for USArray stations

A07A-TA secondary stations.

A04A-TA A05A-TA A06A-TA A08A-TA A09A-TA A10A-TA A11A-TA B04A-TA B05A-TA B06A-TA
B07A-TA B08A-TA B09A-TA B10A-TA C04A-TA C05A-TA C07A-TA C08A-TA C09A-TA C10A-TA
D04A-TA D05A-TA D06A-TA D07A-TA D08A-TA D09A-TA E05A-TA E06A-TA E07A-TA
NEW-US