Ambient noise station-correlation spectra for USArray stations

O01C-TA secondary stations.

ELFS-TA HATC-TA K02A-TA L02A-TA L04A-TA M01C-TA M02C-TA M03C-TA M04C-TA M05C-TA
N02C-TA O02C-TA O03C-TA O04C-TA O05C-TA P01C-TA P05C-TA Q03C-TA Q04C-TA SUTB-TA
BDM-BK CVS-BK FARB-BK GASB-BK HOPS-BK HUMO-BK JCC-BK MCCM-BK MNRC-BK ORV-BK
WDC-BK YBH-BK
BEK-NN