07/08/91,47.33,52.82,19.58,17.78
07/09/91,42.58,53.25,9.42,6.06
07/10/91,59.55,56.32,19.83,14.81
07/11/91,52.92,50.06,15.08,9.75
07/12/91,55.25,59.5,28.75,27.21
07/13/91,54.75,56.8,27.83,20.84
07/14/91,35.33,40.88,11.83,15.65
07/15/91,48.08,49.12,12.33,13.22
07/16/91,66.25,57.79,27.92,14.11
07/17/91,88.67,94.99,30.67,22.15
07/18/91,92.33,87.45,36.17,35.99
07/19/91,81.25,93.74,17.0,17.89
07/20/91,77.75,83.84,18.0,26.57
07/21/91,69.09,81.23,15.58,15.31
07/22/91,68.67,65.25,35.92,40.14
07/23/91,60.08,81.42,8.17,18.67
07/24/91,62.64,53.78,19.92,23.4
07/25/91,49.42,52.82,21.67,17.1
07/26/91,54.17,45.36,15.5,16.25
07/27/91,48.67,16.25,16.17,24.9
07/28/91,52.5,48.35,33.33,30.2
07/29/91,55.0,40.85,38.42,37.29
07/30/91,43.08,44.76,22.92,16.35
07/31/91,41.45,30.56,9.33,24.29
08/01/91,74.67,73.51,30.17,21.92
08/02/91,68.5,54.53,21.0,16.41
08/03/91,78.75,32.63,41.92,37.73
08/04/91,43.83,41.52,18.5,12.43
08/05/91,35.0,43.18,16.58,12.78
08/06/91,50.0,42.82,24.92,19.46
08/07/91,66.09,59.64,20.92,19.11
08/08/91,64.92,65.72,44.08,32.98
08/09/91,43.5,43.91,11.25,7.13
08/10/91,41.92,44.35,22.58,17.72
08/11/91,35.92,32.55,9.75,3.28
08/12/91,37.58,3.28,7.83,14.31
08/13/91,44.5,43.79,19.0,12.81
08/14/91,69.27,56.97,20.0,21.16
08/15/91,46.92,47.01,11.92,17.02
08/16/91,65.5,79.18,26.83,25.95
08/17/91,75.25,85.98,39.0,34.23
08/18/91,32.17,39.5,11.67,12.28
08/19/91,44.33,51.17,30.25,29.94
08/20/91,27.75,34.21,8.92,6.77
08/21/91,31.82,56.05,3.17,12.02
08/22/91,49.83,62.38,9.75,17.32
08/23/91,59.33,54.99,9.25,10.61
08/24/91,45.0,46.13,19.75,12.49
08/25/91,54.75,48.92,8.42,14.97
08/26/91,45.83,60.46,8.08,5.24
08/27/91,56.67,59.15,11.83,nan