Rate my stats, 20nl - 50nl 20k sample

[takingcontrol]

hi folks, curious as to what these stats mean to those in the know. Also, curious as to what a good W%SD is, mine seems quite high. am i running good ? nitty ? wtf's going on ?
been running terrible at 30nl generally due to poor table selection. 50nl, going quite well - think i'm making the move for good.

all comments much appreciated.