Just to test, I took the same values and code from above. This is the code:
param = {{-1256.89, 1428.53, 3.95091}, {-1244.34, 1494.18,
4.58655}, {-1217.63, 1556.05, 4.9574}, {-1188.06, 1615.99,
5.09292}, {-1168.71, 1679.1, 5.02187}, {-1137.94, 1737.54,
4.7725}, {-1114.76, 1799.63...