Shower Meteor count result and radiant maps near the peak, SonotaCo 2009/April .

Radiant data:
 39208 meteors from SonotaCo Network video observation 2007-2008 
 (same data set as described in WGN37-2)

Shower data: 
[IAU_MDC.csv]
 Base: IAU MDC Catalogue - shower_list_all - version 01/2008.
 Addition: 11 showers added by SonotaCo WGN37-2.
 Assumed constant parameters for all showers.
   sol1 = solp - 5.0  (deg)
   sol2 = solp + 5.0  (deg)
   dra,ddec = 0.0  (No drift was considered)
 Prefix: "Ib_"

[IMC_08.csv]
 Base: IMC08ppt.pdf by Sirko Molau
 Prefix: "SM_"

Meteor classification method.
 Classify a meteor to the nearest shower that are allowed by sol range, R, and dV.
 (this means exclusive classification)
 For the showers that were not in SonotaCo WGN37-2, following parameters are assumed
   R = 5.0 (deg) (allowed angle distance from meteor's radiant to shower's radiant)
  dV = 5.0 (km/s) (allowed difference of Vg)

CSV Columns
 IAU MDC list: "e" = established, "w" = working
 SonotaCo WGN37-2 : "+" = exist in SonotaCo's catalog, "->" = joined to other shower
 count : count over 39208 meteors.
 sharpness: sharpness of the cluster (subjective comparison with sporadic)
   A : confirmed shower
     A1: high activity
     A2: low activity
     AP: periodic activity
   B : unconfirmed shower
     B1: Fuzzy cluster compared with sporadic around
      B1H: anti helion area
      B1A: apex area
      B1S - xxx : near xxx
      B1X: sporadic
     B2: Fuzzy cluster or low activity cluster
     B3: cannot be confirmed because very few observations around.
   C : sub-cluster of major shower or identical showers
   D : invalid record
   G : non-shower record (complex, source)  
 IAU code: corresponding IAU shower code for Sirko's shower.

Images :
The plotted radiants are all meteors that were observed in sol peak +-5 degree.
The plotted showers (5 degree circles) are the showers of which the sol range is near
(As for the showers with drift parameters, the shower circles are drifted to know
the position of the shower at the target shower's sol peak).
x:ra, y:dec, dotted lines in every 10 degree.
[IAU_png/*.png]
maps for each IAU shower that has at least one meteor on the condition of R < 7.5.

[IMC_png/*.png]
maps for all Sirko Molau's showers in csv.

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Note
  Showers that should be discussed
    EGE AUR 
    KSE ZCY PPU 


