Using "pz" in OCEAN

How do access the pole( or zero) values after a pz analysis in OCEAN ??

outputs() gives me:

("transferGain" "dcGain" "Pole_1" "Pole_2" "Pole_3"
"Pole_4" "Pole_5" "Pole_6" "Pole_7" "Pole_8"
"Pole_9" "Pole_10" "Pole_11" "Pole_12" "Pole_13"
"Pole_14" "Pole_15" "Pole_16" "Pole_17" "Pole_18"
"Pole_19" "Pole_20" "Pole_21" "Pole_22" "Pole_23"

etc.

But how do I access the actual value of "Pole_1" to do some
calculations ?

Thanks,

--
Phil