Boltek Lightning/2000 - Manual (Page 89)

R E A L - T I M E L I G H T N I N G D E T E C T I O N
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Record kept: No
The positive IC percent counter shows the percentage
of
+IC (positive intercloud/intracloud) strokes
compared to the number of IC strokes in the last
minute.
For example, if the IC stroke rate is 50 and the +IC
stroke rate is 40, this counter would indicate “80%”.
IC strokes are more commonly detected from
relatively nearby storms (within 250 km or 150 miles).
As a storm approaches, the percentage of IC strokes
will typically rise.
When running Lightning/2000 in flash mode, this
counter shows the percentage of +IC flashes, rather
than strokes.
+IC strokes are the more common type of IC stroke
detected.
This counter is not used with the LD-250.
Negative IC Percent Counter
The –IC percent counter has no alarms associated with it.
Record kept: No
The negative IC percent counter shows the
percentage of -IC (negative intercloud/intracloud)
strokes compared to the number of IC strokes in the
last minute.
IC strokes are more commonly detected from
relatively nearby storms (within 250 km or 150 miles).