Degauss currents for various f = 0.88 using I =  (-(-1).^n).*-f.^n*Imax  where n = 0:49
Degauss I = { 6.0000, -5.2800,  4.6464, -4.0888,  3.5982, -3.1664,  2.7864, -2.4521,  2.1578, -1.8989,  1.6710, -1.4705,  1.2940, -1.1387,  1.0021, -0.8818,  0.7760, -0.6829,  0.6010, -0.5288,  0.4654, -0.4095,  0.3604, -0.3171,  0.2791, -0.2456,  0.2161, -0.1902,  0.1674, -0.1473,  0.1296, -0.1141,  0.1004, -0.0883,  0.0777, -0.0684,  0.0602, -0.0530,  0.0466, -0.0410,  0.0361, -0.0318,  0.0280, -0.0246,  0.0216, -0.0190,  0.0168, -0.0148,  0.0130, -0.0114, 0.0};

PTF when degaussed = 0.675 G  (Readings toggle between 0.7 and 0.65 Gauss)