Table A3. Number of respondents selecting specific rating value for ice-related parameters, by
Division (as of 1995).
Missouri
North
North
New
North
Ohio
South
South-
Parameter
Rating
River
Atlantic
Central
England
Pacific
River
Pacifc
western
Totals
Ice thickness
1
15
4
9
0
8
1
2
1
40
2
7
2
2
0
1
1
0
0
13
3
1
2
9
0
0
1
0
0
13
4
4
2
5
0
0
1
0
0
12
5
4
1
7
1
1
0
0
0
14
Water temperature
1
10
3
14
0
2
1
0
1
31
2
3
2
2
0
1
0
0
0
8
3
1
1
4
1
0
1
1
0
9
4
11
3
6
0
5
2
1
0
28
5
6
2
6
0
2
0
0
0
16
Air temperature
1
11
2
7
0
3
1
1
1
26
2
1
2
3
0
1
0
0
0
7
3
1
3
6
0
2
1
0
0
13
4
14
3
9
1
4
2
1
0
34
5
4
1
7
0
0
0
0
0
12
Discharge
1
9
0
4
0
1
2
0
1
17
2
1
0
1
0
1
0
0
0
3
3
1
3
2
0
1
0
0
0
7
4
5
1
5
0
1
2
0
0
14
5
15
7
20
1
6
0
2
0
51
Water stage
1
10
0
3
0
1
1
0
1
16
2
2
0
0
0
2
0
0
0
4
3
2
1
4
0
2
0
0
0
9
4
5
2
4
0
2
2
2
0
17
5
12
8
21
1
3
1
2
0
48
Ice areal coverage
1
17
5
20
0
10
1
2
1
56
2
3
0
1
0
0
2
0
0
6
3
4
2
4
0
0
1
0
0
11
4
4
3
5
1
0
0
0
0
13
5
3
1
2
0
0
0
0
0
6
Ice concentration
1
7
4
17
0
9
1
2
1
61
2
2
1
2
0
0
2
0
0
7
3
1
1
7
0
0
0
0
0
9
4
0
4
5
1
1
1
0
0
12
5
1
1
1
0
0
0
0
0
3
Ice movement
1
26
1
18
0
9
1
2
1
58
2
0
1
3
0
0
1
0
0
5
3
2
3
4
0
1
0
0
0
10
4
1
4
6
0
0
2
0
0
13
5
2
2
1
1
0
0
0
0
6
Date of ice in
1
19
5
16
0
10
2
2
1
55
2
3
0
3
0
0
2
0
0
8
3
5
3
7
0
0
0
0
0
15
4
1
0
6
0
0
0
0
0
7
5
3
3
0
1
0
0
0
0
7
Date of ice out
1
20
5
15
0
10
2
2
1
55
2
3
0
3
0
0
2
0
0
8
3
5
2
4
0
0
0
0
0
11
4
1
0
8
0
0
0
0
0
9
5
2
4
2
1
0
0
0
0
9
Freezeup stage
1
25
5
23
0
7
2
2
1
65
2
3
0
2
0
0
2
0
0
7
3
1
2
2
1
2
0
0
0
8
4
1
2
4
0
1
0
0
0
8
5
1
2
1
0
0
0
0
0
4
Condition of ice
1
23
3
13
0
10
1
2
1
53
2
2
0
1
0
0
1
0
0
4
3
1
1
5
0
0
0
0
0
7
4
3
5
9
0
0
2
0
0
19
5
2
2
4
1
0
0
0
0
9
37
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