diff --git a/src/settings.py b/src/settings.py
index 6d35bb0..8387401 100644
--- a/src/settings.py
+++ b/src/settings.py
@@ -343,7 +343,7 @@ def __init__(self, parent):
         self.parent = parent
         self.path = parent.path
         self.convert_units = parent.convert_units
-        self.load_style = 'new_tranter'
+        self.load_style = 'tranter_v1_0'
         # self.load_full_series_box = parent.load_full_series_box
         # self.set_load_full_set()
         # self.load_full_series_box.stateChanged.connect(lambda: self.set_load_full_set())
@@ -354,14 +354,14 @@ def parameters(self, file_path):
             lines = f.read().splitlines()
 
         if lines[0] == '[Date]':   # new Tranter style
-            self.load_style = 'new_tranter'
-            parameters = self.read_tranter_exp_new(lines)
+            self.load_style = 'tranter_v1_0'
+            parameters = self.read_tranter_exp_v1(lines)
         elif lines[0] == '"[Expt Parameters]"':   # old Tranter style
-            self.load_style = 'old_tranter'
-            parameters = self.read_tranter_exp_old(lines)
+            self.load_style = 'tranter_v0_1'
+            parameters = self.read_tranter_exp_v0(lines)
         else:
-            self.load_style = 'new_tranter'
-            parameters = self.read_tranter_exp_new(lines)
+            self.load_style = 'tranter_v1_0'
+            parameters = self.read_tranter_exp_v1(lines)
 
         # Units are assumed to be: T1 [°C], P1 [Torr], u1 [mm/μs], P4 [psi]
         parameters['T1'] = self.convert_units(parameters['T1'], '°C', '2ct')
@@ -372,7 +372,7 @@ def parameters(self, file_path):
 
         return parameters
       
-    def read_tranter_exp_new(self, lines):
+    def read_tranter_exp_v1(self, lines):
         def get_config(section, key):
             val = self.config[section][key]
             for delimiter in ['"', "'"]:    # remove delimiters
@@ -399,28 +399,38 @@ def get_config(section, key):
                 if mol_frac != 0:  # continue if mole fraction is not zero
                     mix[species] = mol_frac
         
-        # Throw errors if P1, T1, tOpt, or PT Spacing are zero
+        # Throw errors if P1, T1, or Sample Rate are zero
         if float(get_config('Expt Params', 'P1')) == 0:
             raise Exception('Exception in Experiment File: P1 is zero')
         elif float(get_config('Expt Params', 'T1')) == 0:
             raise Exception('Exception in Experiment File: T1 is zero')
-        elif float(get_config('Expt Params', 'tOpt')) == 0:
-            raise Exception('Exception in Experiment File: tOpt is zero')
-        elif float(get_config('Expt Params', 'PT Spacing')) == 0:
-            raise Exception('Exception in Experiment File: PT Spacing is zero')
         elif float(get_config('Expt Params', 'SampRate')) == 0:
             raise Exception('Exception in Experiment File: Sample Rate is zero')
-                          
+             
+        # Throw errors for u1 and calculate/get it from VelatObs or tOpt/PT Spacing
+        if self.config.has_option('Expt Params', 'VelatObs'): # Tranter exp file v1.1 gives velocity
+            u1 = float(get_config('Expt Params', 'VelatObs'))
+            if u1 == 0:
+                raise Exception('Exception in Experiment File: Velocity at observation is zero')
+        else:
+            tOpt = float(get_config('Expt Params', 'tOpt'))
+            PT_spacing =float(get_config('Expt Params', 'PT Spacing'))
+            u1 = PT_spacing/tOpt
+            if tOpt == 0:
+                raise Exception('Exception in Experiment File: tOpt is zero')
+            elif PT_spacing == 0:
+                raise Exception('Exception in Experiment File: PT Spacing is zero')
+
         parameters = {'T1': float(get_config('Expt Params', 'T1')),
-                'P1': float(get_config('Expt Params', 'P1')),
-                'u1': float(get_config('Expt Params', 'PT Spacing'))/float(get_config('Expt Params', 'tOpt')),
-                'P4': float(get_config('Expt Params', 'P4')),
-                'exp_mix': deepcopy(mix), 'thermo_mix': deepcopy(mix),
-                'Sample_Rate': float(get_config('Expt Params', 'SampRate'))}
+                      'P1': float(get_config('Expt Params', 'P1')),
+                      'u1': u1,
+                      'P4': float(get_config('Expt Params', 'P4')),
+                      'exp_mix': deepcopy(mix), 'thermo_mix': deepcopy(mix),
+                      'Sample_Rate': float(get_config('Expt Params', 'SampRate'))}
 
         return parameters
 
-    def read_tranter_exp_old(self, lines):
+    def read_tranter_exp_v0(self, lines):
         parameters = {'T1': None, 'P1': None, 'u1': None, 'exp_mix': {}, 'thermo_mix': {}}
 
         key = None
@@ -491,7 +501,7 @@ def is_numeric(strings):
     def exp_data(self, file_path):
         exp_data, nonnumeric = self.csv(file_path)
 
-        if self.load_style == 'old_tranter':
+        if self.load_style == 'tranter_v0_1':
             exp_data = np.array(exp_data)
             exp_data = exp_data[:,[0,2]]
             exp_data = exp_data[:-1,:]