The best advice I can give is to ignore that table (3-1 on page 22 of the PH 3.0), and instead go with the saving throw progression given for each class (career in T20).
The longer explanation is the table you are refering to is a summative table of BAB and saving throw progression. It explains the BAB progression ok, but the saving throw is poorly worded IMHO.
There are two "levels" of saving throw at each level, poor (the lower number - which means the class isn't very good at making saves like that) and good (the second, higher number).
Each class gets either one or two good saves (barbarians, fighters, paladins, rangers, rogues, wizards, and sorcerers all get only one good save; bards, clerics, and druids get two good saves), while the monk gets all three saving throws at the good rate. Which saving throw gets this benefit is given for each class.
As I said at the beginning, it's easier just to ignore the confusing table.
Hope this helps.