Station details:
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Code: HBF
Latitude:  32.93310
Longitude:  -80.37770
Elevation:    10.0
Depth: 
Name: Harts Bluff
Region: South Carolina,U.S.A.
Status: 

        
Arrival picks statistics
Travel Time Analysis
On the top graph every dot represents the median residual for one month of data. The green line is the overall median; the orange line shows the standard deviation (smad) based on the median absolute deviation (mad), whilst the red line shows twice the standard deviation (2 * smad).
The bottom graph shows the number of residuals for each month. The red columns show the number of residuals whose median (for that month) is outside two standard deviations from the overall median (2 * smad).
Red dots indicate a possible clock error.
Travel time residuals
 

Station comments:
=================

opened 19730323
USGS 19730323-19911001
USTN 197707-19821004
reopened before 198401

Data at the ISC for 33 years between 1973 and 2005.