Attributes
. Differential PSID . Values
15 PSID
(2)
20 PSID
(8)
25-30 PSID
(1)
35 PSID
(14)
< 1.5 PSID
(3)
< 2.5 PSID
(1)
< 3.0 PSID
(2)
< 5.0 PSID
(5)