Wis. Admin. Code § ATCP 41.02
The following index zones are established for the sale of liming materials under s. 94.66, Stats.:
(1) 100 or more.
(2) 90-99.
(3) 80-89.
(4) 70-79.
(5) 60-69.
(6) 50-59.
(7) 40-49.
(8) less than 40.
History: Cr. Register, July, 1970, No. 175, eff. 8-1-70.