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 XI b
Mean Vanishing bearing for Danaus plexippus in South 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       

1

35

 NA

27

 II             15 (17)

47 - 56, 58, 59, 63, 65, 66, 70, 71,

No bearings
      28 III      1

107

 NA
29 IV      2

169, 175

NA
30 V       -

-

NA
Oct.    1 VI      1

247

 NA
2 VII      -

-

 NA

Totals 

7   

      20      

left arrow
Data for SE winds

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Data for NW winds

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