Tactics and Vectors 98/99
                           

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Great Circle Hypotheis  

Magnetoclinic Hypothesis

Magnetic-Latitude Hypothesis

Compass Bearings Hypothesis

Suns' Azimuth Hypothesis

Expansion-Contraction Hypothesis

Always Advance Hypothesis

Never Go Back Hypothesis

 

 

Analysis of Field Data for the 1988 Monarch Butterfly Migration in Resaca and Calhoun, Georgia

left arrowarrow leftTable VIII b
Mean Vanishing bearing for Danaus plexippus in North Winds:   Data used in Calculations

September 26 - October 2, 1988 observations of the Danaus plexippus migration in Resaca and Calhoun, Georgia

Date 

Table

Number of Observations

Field Data
Code Numbers

Reasons for
Exclusion

Sept.  26

   I       

3

2, 3, 4

 NA

27

 II       -

-

 NA
      28 III      -

-

 NA
29 IV            -  (1)

137

 Flying above the inversion
30 V       -

-

 NA
Oct.    1 VI      -

-

 NA
2 VII      -

-

 NA

Total 

7   

3

-

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Data for E winds

Any observations hi-lighted in red were excluded from calculations for reasons given in column 5.