54 Eighteenth Report State Entomologist of Minnesota — 1920 



TABLE III. CONSTANTS OF THE FREQUENCY CURVES 



Factor Entire Curve Below 54 Pet. Above 54 Pet. 



Rel. Hum. Rel. Hum. 



No. of observations 80 49 44 



Catch, per cent of normal 



Mean 100.13 ±3.30 107.9 ±42.0 105.1 ±52.5 



St. Dev. ... 43.88 ±2.36 47.0 ±32.1 51.7 ±35.3 



Temperature, (°F.) 



Mean 63.55 ± .441 64.95 ± .541 64.32 ± .659 



St. Dev. . . . 5.85 ± .314 . 5.62 ± .383 6.43 ± .438 



Relative humidity {%) 



Mean 54.45 ±1.11 44.35 ± .654 63.64 ± .976 



St. Dev. ... 14 72 ± .791 6.79 ± .464 10.15 ± .731 



Barometric pressure ( Inches ) 



Mean 28.97 ± .013 29.00 ± .013 28.92 ± .015 



St. Dev. . . .174± .009 .139± .009 150± .010 



Below, in Table IV, are given the total correlation coefficients for 

 all the combinations of factors, and the partial (second order) coeffi- 

 cients for catch with the other variables. Space does not permit the 

 publication of the original correlation tables. 



TABLE IV. CORRELATION OF MOTH FLIGHT WITH 

 METEOROLOGICAL FACTORS 



Factors 7 P.M. Relative Humidity 7 P.M. Relative Humidity 



Correlated Below 54% Above 54% 



r — Total r — Partial r — Total r — Partial 



Catch- 

 Temp, ret +.34±.085 rnt. hp +.28±.089 ret +.19±.098 ret. hp +.02± 102 



Catch — 



Humidity rch +.37±.083 reh. tp +.31 ±.087 r,.h — .46±.08') rch. tp — .35±.0S9 



Catch — 



Pressure rc-p _.17±.094 rep. th +.06±.09:) rep 4-.18±.09S rep. th -|-.09±.10I 



Temp. — 



Humidity rth 4-.25±.O90 nh _.47±.079 



Temp. — 



Pressure np _.45±.077 rtp _.40±.085 



Humidity- 

 Pressure r — .32±.085 r _.20±.098 



Multiple 



Correlation Re. ihp +45±07 Re. thp +.47±.08 



