There are actually 55 distinct run styles in the HDW data.
Link to an easy to read thread on the JCapper Message Board for the general groupings: Here.
In SQL Mode the general groupings are referenced as follows for HDW Data: • Min val for the E run styles is 0 • Min val for the EP run styles is 15 • Min val for the P run styles is 30 • Min val for the PS run styles is 45 • Min val for the S run styles is 60 • Min val for the SS run styles is 75 • Min val for the U run styles is 90
Link to a comprehensive thread on the JCapper Msg Board showing all 55: Here.