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

Code: RSSD
Latitude:  44.12120
Longitude: -104.03590
Elevation:  2090.0
Depth: 
Name: Black Hills
Region: South Dakota,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
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:
=================

opened 19810810
SAND 19810810-198601
Updated co-ordinates 2009/09/09
NEIC opened 198601
USTN 19811231-199105
USNN opened 19910510

Data at the ISC for 44 years between 1982 and 2025.

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

RSSD   Black Hills                                                   44.12040 -104.03600    2060.0         25-08-1999 22-10-2009  
       South Dakota,U.S.A.