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

Code: GRO
Latitude:  43.32000
Longitude:   45.75000
Elevation:   123.0
Depth: 
Name: Groznyy
Region: Chechnya,Russia
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
Amplitude analysis
 On the top graph every dot represents the median value for that 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 (if present) shows twice the standard deviation (2 * smad).
The bottom graph shows the number of observations for each month. Any red columns show those observations whose monthly median value is greater than twice the standard deviation (2 * smad) from the overall (running) median (shown in the top graph by red dots).

Red dots indicate a possible calibration error.
 

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

XC2R4-RAT-RCH-RID-RIM-RKM-RTA-RWM
Grozny
opened 1932
Coords corrected >6 km 20000115

Data at the ISC for 60 years between 1934 and 2016.

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

GRO    Groznyy                                                       43.31670   45.70000     124.0         25-08-1999 25-08-1999  
       Checheno-Ingushskaya

GRO    Groznyy                                                       43.32000   45.75000     123.0         25-08-1999 31-03-2011  
       Chechnya,Russia