How to find how many data points fall into 1, 2 and 3 standard deviations.

14.4

10.9

16.1

15.1

13.0

15.8

13.3

16.8

11.9

15.8

12.6

14.0

16.5

11.6

14.4

13.7

13.0

15.4

16.5

12.3

14.4

14.0

13.3

15.4

13.7

16.1

12.3

13.7

15.8

11.6

15.1

12.6

15.4

13.7

16.1

12.3

14.0

15.1

13.0

14.4

15.8

13.3

13.3

11.2

15.1

13.7

14.0

14.4

11.9

15.4

15.8

14.4

15.4

14.7

15.4

14.0

14.4

15.1

16.5

11.6

12.6

16.8

13.3

13.7

14.4

10.9

15.8

13.0

16.1

12.3

16.1

13.7

15.1

14.4

14.0

15.1

12.6

17.2

11.2

15.4

13.0

14.0

16.5

12.3

15.1

13.7

14.4

13.3

14.0

28.0

11.9

15.8

15.4

13.7

16.1

14.4

12.6

16.8

14.0

17.5

12.3

15.1

13.7

14.0

11.9

15.1

13.3

14.4

15.4

11.6

15.1

14.4

14.0

13.0

15.8

12.6

17.5

15.4

14.0

16.1

13.7

16.5

11.2

16.8

17.2