Location 3
Location 4
20
1600
15
Temperature
1200
10
800
ISM
5
400
a. FWD locations 3 and 4.
0
0
5
20
25
30
5
10
15
20
25
30
Mar
Apr
May
Location 2
Location 6
Location 9
2000
20
1600
15
Temperature
1200
10
800
5
ISM
b. FWD locations 2, 6 and 9.
400
0
0
5
20
25
30
5
10
15
20
25
30
Mar
Apr
May
Location 15
Location 16
Location 17
Location 18
Location 19
2000
20
1600
15
Temperature
1200
10
800
5
400
0
ISM
c. FWD locations 15 to 19.
Figure 11. Changes in ISM during spring
0
5
20
25
30
5
10
15
20
25
30
thaw at Central Wisconsin Airport.
Mar
Apr
May
12
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