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Table 2 Highest values of phi coefficients demonstrating correlation between Aedes aegypti geographic distribution and threshold temperatures. The temperature assumption is estimated following the criteria mentioned in Methods. The interval of temperature assumption is 0.1 °C

From: Critical low temperature for the survival of Aedes aegypti in Taiwan

Interpolation techniques

 

Land surface night temperature (°C)

Minimum

Mean

Maximum

Inverse distance weighting

Threshold temperature

13.5

13.8

14.0

The highest value of phi coefficient

0.68

0.71

0.69

Local polynomial interpolation: exponential kernel function

Threshold temperature

13.8

13.8

13.9

The highest value of phi coefficient

0.70

0.68

0.67

Radial basis function: completely regularized spline

Threshold temperature

13.4

13.8

14.1

The highest value of phi coefficient

0.67

0.69

0.70

Ordinary kriging: spherical type

Threshold temperature

13.7

13.8

14.0

The highest value of phi coefficient

0.71

0.69

0.71