diff --git a/__pycache__/Model.cpython-311.pyc b/__pycache__/Model.cpython-311.pyc
index 7d4bd60..e300a65 100644
Binary files a/__pycache__/Model.cpython-311.pyc and b/__pycache__/Model.cpython-311.pyc differ
diff --git a/fitter.py b/fitter.py
index 226d59f..865f972 100644
--- a/fitter.py
+++ b/fitter.py
@@ -22,7 +22,7 @@ class Fitter:
         self.current_fit_range = current_fit_range
         self.fit_results = {}
 
-        self.tspan = self.time_points
+        self.tspan = [0,1000]
         self.dt: float = 1  # 1.0
         self.time_points = np.arange(*self.tspan, self.dt)