From: Shane Larson, Kansas 
Date: Fri, 23 Nov 2001 00:26:47 -0800

I have a set of Leonid observations for you, which may or may
not be useful; I didn't discover your Leonid report page
(http://marsoweb.nas.nasa.gov/leonid/stormcount.html) until just
today, and so didn't follow your recording guidelines on the
night of the shower.  Never-the-less, I'll provide you with my
data, in case you should find it useful.

(0) Observations were from Cloverdale, California.  Coordinates:
LAT 38 46.51N, LONG 122 57.80W, ELEV 556ft.  All observations
reported here were done facing due west.  I estimate that my
gaze and records encompass about 1/3 of the sky.

(1) Since I was recording the data for myself, I began by simply
recording individual events.  Around 2:00 am, the rate rapidly
got so high that I began binning observations in 4 brightness
classes, and in approximate 5 minute intervals -- this binned
data is what I report here, ending at 4:00am PST.

(2) The timing interval should have been more regular, and would
have been if I had thought ahead and prepared data sheets for
myself.  As it was, for each interval I recorded until I ran out
of room on the line in my logbook, then started a new timing
interval.  The intervals range from about 3 minutes to 7 minutes
on average.

All times were recorded in PACIFIC STANDARD TIME, and rounded to
the nearest minute (I didn't feel inclined to jot down the
seconds; sorry).  My watch was set using Apple Computer's
Network Time Server to set my laptop, then synching my watch by
hand with the laptop.  The error on the watch was less than 5
seconds, but that error was lost in the rounding.

(3) To note observation of a meteor, I simply recorded a hash
mark in one of my 4 brightness classes.  My brightness classes
were:
       X = "extreme" = brighter than Jupiter (m = -2.54)
       B = "bright" = brighter than Sirius (m = -1.47)
       M = "medium" = dimmer than Sirius, but with bright core
       D = "dim" = vapor trails only or no bright core
The meteors were binned by my best estimate when I observed it.
Both Sirius and Jupiter were in the sky, so I had a reference
handy.

(4) I took one break during my observations, from 3:10 to 3:16 am PST.

(5) I saw a significant number of bolides after about 3:25am.
During the whole night, I had not noted a single one, and in the
half hour between 3:25 and 4:00 am, I *noted* six down in my
logbook, at times: 3:31, 3:34, 3:41 (this one looked like two
meteors together, so was probably a single object), 3:47 and
3:56.

(6) The data is listed below.  Each row is one of my time bins
of observations.  The columns, separated by commas, are:
    TIME at the START of the bin
    SIZE of the bin in MINUTES
    NUMBER of X Meteors observed
    NUMBER of B Meteors observed
    NUMBER of M Meteors observed
    NUMBER of D Meteors observed
    TOTAL NUMBER of Meteors observed

bin ID,Bin Size (min),X meteors,B meteors,M meteors,D
meteors,Total Meteors
1:54,13,14,20,15,14,63
2:07,8,13,21,17,9,60
2:15,7,11,10,20,9,50
2:22,5,5,8,18,10,41
2:27,6,6,20,15,7,48
2:33,4,5,11,22,9,47
2:37,3,1,13,18,11,43
2:40,5,8,12,20,9,49
2:45,5,3,11,25,13,52
2:50,7,3,14,20,18,55
2:57,3,2,11,15,4,32
3:00,5,0,7,17,15,39
3:05,5,2,13,18,17,50
3:16,4,2,12,18,11,43
3:20,5,2,5,15,14,36
3:25,13,5,14,20,10,49
3:38,7,4,11,10,13,38
3:45,15,4,17,17,13,51