====================================================== OBSERVATION STATION | March | April | May ------------------------+---------+---------+--------- CANADA | | | Pt. Pelee | | | 1,400 | | | MEXICO | | | S. L. P.: Ebano | 600 | | Tamps.: Tampico | 3,100 | 21,200 | Yuc.: Progreso | | 11,900 | | | | UNITED STATES | | | Fla.: Pensacola | | 100 | 700 Winter Park | | 2,300 | 1,000 Ga.: Athens | | 900 | Thomasville | | 1,500 | 200 Iowa: Ottumwa | | 3,800 | 12,500 Kans.: Lawrence | 14,500 | 2,200 | Ky.: Louisville | | 5,000 | 1,400 Murray | | 3,700 | La.: Baton Rouge | | 3,400 | Lafayette | | 1,800 | Mansfield | | 2,100 | 1,600 New Orleans | 200 | 1,100 | Oak Grove | | 2,700 | 2,500 Mich.: Albion | | 700 | Minn.: Hopkins | | | 1,100 Miss.: Rosedale | | 2,200 | 1,400 Mo.: Columbia | | 800 | 3,400 Liberty | | 800 | 800 Okla.: Stillwater | 900 | 700 | 1,400 S. Car.: Charleston | 400 | 600 | 200 Tenn.: Knoxville | | 5,800 | 1,900 Memphis | 1,200 | 3,400 | 2,100 Tex.: College Station | | 3,400 | 3,100 Rockport | | 2,400 | ------------------------------------------------------ TABLE 5.--Maximum Nightly Densities at Stations with More Than One Night of Observation