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

Code: VHH
Latitude:   9.23300
Longitude:  124.67200
Elevation:   250.0
Depth: 
Name: Hibok Hibok
Region: Mindanao,Philippines
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 1969

Data at the ISC for 6 years between 1993 and 2007.

Known station history:
======================

First and Last use refers to the time period in which the coordinates were used by the ISC.

Code   Station name/Region                                           Latitude  Longitude Elevation   Depth  First use   Last use
================================================================================================================================

VHH    Hibok Hibok                                                    9.23306  124.67200                   25-08-1999 25-08-1999  
       Mindanao

VHH    Hibok Hibok                                                    9.23300  124.67200                   25-08-1999 03-03-2000  
       Mindanao