{"coeffs": [1.060606221373976e-08, 2.227274925322812e-08, 0.5461308642402224, 0.002268846102746573], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.6915314781669172e-09, 1.068972734448328e-08, 5111.339924526696, 7583.14338541587], "covariance": [[1.3627404654297225e-17, -3.1643667737899494e-18, -2.2054129776869095e-06, -3.271950128230568e-06], [-3.1643667735699042e-18, 1.1427027069939356e-16, 3.74856050348263e-05, 5.561330760924991e-05], [-2.2054129778159194e-06, 3.748560503426717e-05, 26125795.824060578, 38760023.539123856], [-3.2719501284879788e-06, 5.561330760841119e-05, 38760023.539123856, 57504063.60377646]]}