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Table 2 Prediction error degrees and their error value range

From: A new method for error degree estimation in numerical weather prediction via MKDA-based ordinal regression

Error degree

Color

Temperature

Relative humidity

Wind velocity

1

Blue

err<−3°C

err<−20%

err<−3 m/s

2

Light blue

−3°C ≤err<−2°C

−20%≤err<−10%

−3 m/s ≤err<−2 m/s

3

Green

−2°C ≤err<−1°C

−10%≤err<−5%

−2 m/s ≤err<−1 m/s

4

White

−1°C ≤err<1°C

−5%≤err<5%

−1 m/s ≤err<1 m/s

5

Yellow

1°C ≤err<2°C

5%≤err<10%

1 m/s ≤err<2 m/s

6

Orange

2°C ≤err<3°C

10%≤err<20%

2 m/s ≤err<3 m/s

7

Red

3°C ≤err

20%≤err

3 m/s ≤err

  1. Temperature, relative humidity, and wind velocity respectively represent the error value of ‘temperature on the ground’, error value of ‘relative humidity on the ground,’ and error value of ‘wind velocity on the ground’. Furthermore, err means error.