code: def plot_strat(fignum, data, labels):
      
      vertical_plot_init(fignum, 10, 3)
      xlab, ylab, title = labels[0], labels[1], labels[2]
      X, Y = [], []
      for rec in data:
          X.append(rec[0])
          Y.append(rec[1])
      plt.plot(X, Y)
      plt.plot(X, Y, 'ro')
      plt.xlabel(xlab)
      plt.ylabel(ylab)
      plt.title(title)
docs: plots a time/depth series
       Parameters
       _________
       fignum : matplotlib figure number
       data : nested list of [X,Y] pairs
       labels : [xlabel, ylabel, title]