I'm not sure why Ben put in a column called "Max" or what it really means. The "Max" column corresponds roughly to a disinfecting chlorine level of 0.07 ppm which is equivalent to around 0.15 ppm FC with no CYA so is a very low amount of disinfecting chlorine. The "Min" column, for comparison, roughly corresponds to a disinfecting chlorine level of 0.03 ppm. The shock column doesn't correspond to a single disinfecting chlorine level, but is closest in the mid-CYA area to around 0.3 ppm disinfecting chlorine and that's equivalent to around 0.6 ppm FC with no CYA. So even shock level isn't as strong as most indoor pools with 1-2 ppm FC and no CYA.

The above discussion has to do with safety from the reaction rate of chlorine (i.e. concentration or strength) -- i.e. how fast it oxidizes your skin while in the water, for example. This is different from the actual FC level which determines the total amount of chlorine (i.e. capacity) which is more relevant if you were to swallow the chlorine since all of it will react and the rate is less important than the total amount of potential damage (in reality, most of the chlorine should get neutralized by saliva unless you drink an awful lot of it). For swimsuits, the disinfecting chlorine level is relevant while in the water, but when getting out and having it dry out, then the FC level is probably somewhat important though chlorine will also outgas as the water evaporates.

Richard