edata := [[3.9567, .93454], [-3.9003, 1.1956], [4.3929, .19387], [1.4924, 2.1919], 
[2.1692, 2.0335], [-2.0670, -2.0501], [2.5995, -1.9491], [2.9902, -1.7563], 
[.71339, 2.3437], [4.1818, -.67878], [2.2318, 1.9622], [.61045, 2.3534], 
[1.1019, 2.2671], [2.0137, 2.0214], [2.8346, -1.8451], [-2.3313, 1.9609], 
[4.1132, -1.0013], [-4.6072, -.13653], [-4.2908, -.70558], [3.1230, 1.7137], 
[-4.2126, -.59678]];