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

Code: DHN
Latitude:  42.82550
Longitude:  -78.19300
Elevation:   491.0
Depth: 
Name: Doyle Hill
Region: New York,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:
=================

19760116-19760728
19790601-19920323
USTN 19820304-19841115
19850625-before 198511

Data at the ISC for 13 years between 1981 and 1995.