Math Treatment

Excellent r2 > 0.90

and RPDc > 3.0

Good 0.80 < r2 ≤ 0.90 and 2.5 < RPDc ≤ 3.0

Approximate 0.65 < r2 ≤ 0.80 and 2.0 < RPDc ≤ 2.5

Poor r2 ≤ 0.65

and RPDc ≤ 2.0

Number of Calibration Model Under Various Categories

0,4,4,1

4

7

7

9

1,4,4,1

11

9

6

1

2,4,4,1

18

2

5

2

0,5,5,1

4

7

6

10

1,5,5,1

11

7

7

2

2,5,5,1

14

8

3

2

0,10,5,1

4

7

6

10

1,10,5,1

10

6

9

2

2,10,5,1

12

7

3

5

Category-A

r2 > 0.80

and

RPDc > 2.0

Category-B

r2: 0.50 - 0.80

and

RPDc: 1.4 - 2.0

Category-C

r2 < 0.50

and

RPDc < 1.4

0,4,4,1

13

13

1

1,4,4,1

23

3

1

2,4,4,1

21

4

2

0,5,5,1

13

13

1

1,5,5,1

23

3

1

2,5,5,1

23

3

1

0,10,5,1

13

13

1

1,10,5,1

22

4

1

2,10,5,1

21

5

1