7LEpaper4

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506 L. W. EDWARDS

400

300 4 \
200 4 \

SA

LONGER THAN [5 SECS.

NUMBER OF OCCURRENCES

100 J

OCT. NOV. DEC. JAN. FEB. MAR.APR. MAY JUN. JUL. AUG. SEP.
1965 1966

Fic. 3. Monthly totals of long duration signals.

OCCURRENCES 3 OR MORE MINS.
rw

15 20 25 30 5 10 15 20 25 30 4 9 MW 19 24 29
oct. NOV. DEC. JAN.

Nn
cs
wo
w
5

4A

LEONIDS

0000-1200
25 GEMINIDS

26 31 5 0 15 20 25 30- 5& 10 1 20 25 30 4 9 4 19 240 (29

OCCURRENCES 15 SECS. OR LONGER

4B

Fig. 4. Showing increase in number of long duration signals during the Leonid and Geminid Meteor shower
periods. Gaps in the graphs of Fig. 4B are due to the records on these dates being considered unreliable.