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

Code: HKL
Latitude:  20.71060
Longitude: -156.25900
Elevation:  3051.0
Depth: 
Name: Haleakala
Region: Hawaii,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:
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Correction to coordinates Apr 1992
XC1-WWVH
opened 1975
USTN opened <198511
Elevation added 19881111
Coords corrected slightly 19920414

Data at the ISC for 37 years between 1971 and 2010.