Reading errors/time (per sec.)

(15+) 1

(9-14) 2

(6-8) 3

(4-5) 4

(0-3) 5

(121"+) 1

2

3

4

5

6

(96" - 120’’) 2

3

4

5

6

7

(83" - 95") 3

4

5

6

7

8

(67" - 82") 4

5

6

7

8

9

(Up to 66") 5

6

7

8

9

10