Robert Feder has the details, analysis, and the daypart breakouts. This is the overall radio ratings in Chicago...
1. WVAZ 102.7-FM R&B, 8.6 (6.0)
2. WBBM 780-AM/WCFS 105.9-FM all news, 6.4 (7.3)
3. (tie) WXRT 93.1-FM adult album alternative, 4.7 (4.9); WLIT 93.9-FM adult contemporary, 4.7 (5.7)
5. WDRV 97.1-FM classic rock, 4.5 (4.7)
6. WLS 94.7-FM classic hits, 4.4 (4.4)
7. WTMX 101.9-FM hot adult contemporary, 4.2 (5.5)
8. WOJO 105.1-FM Mexican regional, 3.8 (3.7)
9. (tie) WSCR 670-AM sports talk, 3.2 (2.5); WBEZ 91.5-FM public radio news talk, 3.2 (3.4)
11. (tie) WGN 720-AM news talk, 3.1 (3.6); WKSC 103.5-FM Top 40, 3.1 (3.5)
13. (tie) WBMX 104.3-FM classic hip hop, 2.8 (2.6); WRME 87.7-FM soft rock oldies, 2.8 (2.8); WSHE 100.3-FM adult contemporary, 2.8 (2.7)
16. WBBM 96.3-FM Top 40, 2.7 (2.7)
17. WPPN 106.7-FM Spanish adult contemporary, 2.6 (2.7)
18. WGCI 107.5-FM hip-hop, 2.5 (2.4)
19. WUSN 99.5-FM country, 2.3 (2.3)
20. (tie) WKQX 101.1-FM alternative rock, 2.2 (2.5); WLEY 107.9-FM Mexican regional, 2.2 (1.9)
22. WLS 890-AM news talk, 2.1 (1.9)
23. WEBG 95.5-FM country, 1.8 (2.1)
24. WPWX 92.3-FM hip-hop, 1.5 (1.5)
25. WCPT 820-AM progressive talk 1.3 (0.3)
26. WVIV 93.5-FM Spanish contemporary, 1.2 (1.2)
27. (tie) WFMT 98.7-FM classical 0.9 (0.9); WMVP 1000-AM sports talk, 0.9 (1.0)
29. (tie) WCKL 97.9-FM contemporary Christian music, 0.7 (0.8); WSRB 106.3-FM R&B, 0.7 (0.7)