Jim,

The Diff: number is the S marker time minus the P marker time. This number
is used to calculate the distance from the station to the event.

-Larry Cochrane
Redwood City, PSN
 
At 08:04 PM 11/18/99 EST, you wrote:
>In the program WinQuake, is the component labeled "Diff" on the last line 
>when you print out earthquake results the area that indicates the period of 
>the instrument?  If so are there variables that change the period from one 
>quake to another?
>Jim Allen
>
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