Ambient noise station-correlation spectra for USArray stations

B04A-TA secondary stations.

A04A-TA A05A-TA A06A-TA A07A-TA B05A-TA B06A-TA B07A-TA C03A-TA C04A-TA C05A-TA
C07A-TA D03A-TA D04A-TA D05A-TA D06A-TA D07A-TA E03A-TA E04A-TA E05A-TA E06A-TA
F03A-TA F04A-TA F05A-TA
NLWA-US