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Helena Aftershock 1935-11-28 14:41:48 UTC

Region:  Montana
Latitude:  46.6000
Longitude:  -112.0000
Depth:  5.0 km
Mechanism:  Unknown
ML:  5.0

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Helena, MT - Federal Bldg - Park & Clark Epicentral dist: 6.3 km
USGS station HFB Site Geology: rock
Processing by: USGS Structure: 4-story Bldg
Data Available: corrected acceleration, velocity, displacement, & spectra
Summary Page for this StationPlot Acceleration
Spectra: Log   Lin

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Component: 90 PGA (cm/s/s): -83.06 PGV (cm/s): -3.88 Add this to bin
Component: 0 PGA (cm/s/s): -74.85 PGV (cm/s): -3.22 Add this to bin
Component: Up PGA (cm/s/s): -31.74 PGV (cm/s): -1.42 Add this to bin

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