How can this table possibly be converted to a MySql table?
I'd pull this data into two tables: Factor's and STEN Lookup's.

Your Factors table would look like:

Factor_ID(PK) | Factor_Name
--------------|------------
  1           |      A
  2           |      B
  3           |      C
  4           |      D


Your `STEN_Lookup'

Factor_ID(FK) | Score_Value | STEN_Value
--------------|-------------|-------------
  1           |       0     |       1
  1           |       1     |       1
  1           |       2     |       1
  1           |       3     |       2
  1           |       4     |       2
  2           |       0     |       8
  2           |       1     |       9
  2           |       2     |       11
.....


I'd suggest you do some reading on normalization, as it helps massivly when designing your tables. A great Video Resource is MVA, (Video 2 on this hyperlink).