{"coeffs": [-3.723897832086551e-07, -1.1949520265494715e-08, -0.28411717615674936, 0.02473522914420361], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.4357586095011857e-08, 1.4140777651711157e-08, 0.012602101381265508, 0.01079635833831137], "covariance": [[5.93292000375915e-16, -1.7145185457271513e-17, 1.1863998134065396e-10, -9.573450070142202e-11], [-1.714518545727151e-17, 1.999615925951337e-16, 3.793328660326515e-11, 3.434859652345344e-11], [1.1863998134065396e-10, 3.793328660326514e-11, 0.00015881295922369403, -1.2110186580009134e-05], [-9.573450070142202e-11, 3.434859652345344e-11, -1.2110186580009134e-05, 0.00011656135336922543]]}