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Station details:
================

Code: HNME
Latitude:  46.15989
Longitude:  -67.98669
Elevation:   209.0
Depth: 
Name: Houlton
Region: Maine,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.
 

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

USTN before 198401-before 199208
19930224-19940502
WES closed 1992?

Data at the ISC for 14 years between 1980 and 1993.