{"coeffs": [-3.207835580616674e-07, 0.0009611789630549933, 7.8031804637989355, 0.9873385022295932], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.2901965535210523e-06, 11.769619454057036, 12198.455436760589, 12.939507599371185], "covariance": [[1.082539336080181e-11, -3.8449445893849733e-05, -0.03985232244589004, -4.249523191939255e-05], [-3.844944592573336e-05, 138.52394209331786, 143571.16639975627, 152.02729609217258], [-0.03985232247882727, 143571.16639935112, 148802315.04263398, 157570.3388788635], [-4.249523193714562e-05, 152.0272960300772, 157570.33881495026, 167.43085691418463]]}