{"coeffs": [-2.2572220461911675e-07, 2.2761681515697843e-09, -0.28667095883321403, 0.023773660176880925], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.899899010313515e-08, 2.8387432525228402e-08, 0.03919093224609348, 0.03364962658143941], "covariance": [[2.400901031127137e-15, -6.609133907907687e-17, 7.269158297093402e-10, -5.857420415388937e-10], [-6.609133907907687e-17, 8.058463253743954e-16, 2.339820761721036e-10, 2.106516341200308e-10], [7.269158297093402e-10, 2.339820761721036e-10, 0.0015359291703178892, -0.00010562339346364571], [-5.857420415388936e-10, 2.1065163412003085e-10, -0.00010562339346364571, 0.0011322973690703138]]}