text: import numpy as np
  import pandas as pd
  from helper import str_time_to_num_time, num_time_to_str_time
  
  df = pd.read_csv('../data/vdot-times-jack-daniels-running-formula-2.csv')
  data=[]
  distances = df.columns[1:]
  distances_km = {'1500':1.5, 'Mile':1.60934, '3k':3, '2-mile':3.21869,
                  '5k':5, '8k':8, '5-mile':8.04672, '10k':10, '15k':15,
                  '10-mile':16.0934, '20k':20, '1/2 Marathon':21.0975, '25k':25,
                   '30k':30, 'Marathon':42.195}
  for index, row in df.iterrows():
      vdot = row['VDOT']
      for dist in distances:
          distance = distances_km[dist]
          time = str_time_to_num_time(row[dist])
          data.append([vdot, distance, time])
  
  pd.DataFrame(data, columns=['VDOT', 'Distance', 'Time']).to_csv('../data/vdot-times-jack-daniels-running-formula-2-modified.csv', index=False)