Ambient noise station-correlation spectra for USArray stations

H02A-TA secondary stations.

D03A-TA D04A-TA E03A-TA E04A-TA E05A-TA F03A-TA F04A-TA F05A-TA F06A-TA G03A-TA
G04A-TA G05A-TA G06A-TA H03A-TA H04A-TA H05A-TA H06A-TA I02A-TA I03A-TA I04A-TA
I05A-TA J02A-TA J03A-TA J04A-TA J05A-TA K01A-TA K02A-TA K04A-TA L02A-TA
HUMO-BK