$\begin{figure}\psfig{file=fig1.eps,width=10cm} \end{figure}$

Figure 1: The fit of the theory to the photometric observations 970413-1O2-d

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Figure 2: The fit of the theory to the photometric observations 970422-4O3-d. The time is measured from $0^ {\rm h}$ Apr. 22, 1997

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Figure 3: The fit of the theory to the photometric observations 970622-1E2-a

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Figure 4: The fit of the theory to the photometric observations 970706-3E4-v

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Figure 5: The fit of the theory to the photometric observations 970715-1O3-a

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Figure 6: The fit of the theory to the photometric observations 970718-3E2-a

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Figure 7: The fit of the theory to the photometric observations 970718-3O2-a (dots) and 970718-3O2-g (circles)

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Figure 8: The fit of the theory to the photometric observations 970719-3O1-a

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Figure 9: The fit of the theory to the photometric observations 970724-1E4-a

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Figure 10: The fit of the theory to the photometric observations 970725-1E4-a (squares), 970725-1E4-g (dots, dashed line) and 970725-1E4-t (circles)

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Figure 11: The fit of the theory to the photometric observations 970725-3E2-a (circles), 970725-3E2-k (dots) and 970725-3E2-g (squares)

$\begin{figure}\par\psfig{file=fig12.eps,width=10cm} \end{figure}$

Figure 12: The fit of the theory to the photometric observations 970725-3O2-k (dots, dashed line) and 970725-3O2-t (circles)

$\begin{figure}\par\psfig{file=fig13.eps,width=10cm} \end{figure}$

Figure 13: The fit of the theory to the photometric observations 970731-4E3-e. The time is measured from $0^ {\rm h}$ July 31, 1997

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Figure 14: The fit of the theory to the photometric observations 970801-4E2-g (circles, dashed line) and 970801-4E2-l (dots)

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Figure 15: The fit of the theory to the photometric observations 970801-4E3-k

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Figure 16: The fit of the theory to the photometric observations 970803-4E1-k (dots), 970803-4E1-l (squares) and 970803-4E1-t (circles). The time is measured from $0^ {\rm h}$ Aug. 2, 1997

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Figure 17: The fit of the theory to the photometric observations 970830-3E2-a

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Figure 18: The fit of the theory to the photometric observations 970830-3O2-a

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Figure 19: The fit of the theory to the photometric observations 970903-1E3-a

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Figure 20: The fit of the theory to the photometric observations 970906-3O2-g

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Figure 21: The fit of the theory to the photometric observations 970910-1O3-a

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Figure 22: The fit of the theory to the photometric observations 970914-3E1-e

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Figure 23: The fit of the theory to the photometric observations 970915-3E2-a

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Figure 24: The fit of the theory to the photometric observations 970918-1O3-g

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Figure 25: The fit of the theory to the photometric observations 970918-1E3-e (dots, dashed line) and 970918-1E3-t (circles)

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Figure 26: The fit of the theory to the photometric observations 970921-3E1-l

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Figure 27: The fit of the theory to the photometric observations 970922-3E2-g

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Figure 28: The fit of the theory to the photometric observations 971007-4O1-t

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Figure 29: The fit of the theory to the photometric observations 971109-4O2-t (dots, dashed line), 971109-4O2-w (circles)

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Figure 30: The fit of the theory to the photometric observations 971110-3E1-t

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Figure 31: The fit of the theory to the photometric observations 971118-3O1-g

Figures 1-31