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

Code: RGRS
Latitude:  32.90750
Longitude:  -80.19417
Elevation:   -52.0
Depth: 
Name: Roger Stewart
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 19860601
USGS 19860601-19941001
CSC code RGR
GPS resurvey 1990s
Coords corrected 199910

Data at the ISC for 23 years between 1990 and 2020.

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
================================================================================================================================

RGRS   Roger Stewart                                                 32.90550  -80.19380              52.0 25-08-1999 25-08-1999  
       South Carolina