The number of visitors at theme park through season and year has been recorded and is given in following table:
Quarter
|
2003
|
2004
|
2005
|
2006
|
Winter
|
45
|
46
|
35
|
16
|
Spring
|
50
|
49
|
44
|
12
|
Summer
|
43
|
47
|
13
|
13
|
Fall
|
13
|
25
|
19
|
19
|
Evaluate the seasonal index for Fall using all of data.