This system is deprecated, and may no longer be in use or is superseded by another system.
| Site | Name | County | Lat | Lon | Range | Updated |
|---|---|---|---|---|---|---|
| 001 (1) | Cobden (Confirmed LCN) | Union | 37.57117 | -89.18342 | 25 | 2000-01-01 |
| 002 (2) | Herod (Confirmed LCN) | Pope | 37.5825 | -88.47556 | 20 | 2010-03-30 |
| 003 (3) | Herrin (Confirmed LCN) | Williamson | 37.80311 | -89.01814 | 25 | 2000-01-01 |
| 004 (4) | Mt Vernon (Identified LCN) | Jefferson | 38.31503 | -88.93922 | 22 | 2015-07-22 |
| 101 (65) | Cobden (Unidentified LCN) | Union | 41.71476 | -89.46288 | 65 | 2010-03-30 |
| 103 (67) | Herrin (Unidentified LCN) | Williamson | 41.71476 | -89.46288 | 65 | 2010-03-30 |
| 104 (68) | Mt. Vernon (Unidentified LCN) | Jefferson | 38.33167 | -88.93222 | 22 | 2010-06-27 |
| 105 (69) | Makanda (Unidentified LCN) | Union | 37.57311 | -89.18175 | 25 | 2000-01-01 |
| 106 (6A) | Elco (Unidentified LCN) | Alexander | 37.32117 | -89.31814 | 25 | 2000-01-01 |