{"coeffs": [-275.1272924208327, 0.40111742322648963, -3.9005217104324754, 0.6403441616913965], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [0.10553616238019119, 8.206031380842924e-07, 0.0002535868957285525, 1.4190601329394094e-06], "covariance": [[8199326013.936143, -62303.32683466608, 19701618.110330578, -109639.12652516973], [-62303.32683466608, 0.495726237893757, -149.7953400792346, 0.8519340423164422], [19701618.110330578, -149.7953400792346, 47340.10030084097, -263.52399921239595], [-109639.12652516973, 0.8519340423164423, -263.52399921239595, 1.4824401111296532]]}