# 14 categories
slope in degrees

0.00 0.00 0.00 0.00
0:no data
1:0 degrees
2:1 degree
3:2 degrees
4:3 degrees
5:4 degrees
6:5 degrees
7:6 degrees
8:7 degrees
9:8 degrees
10:9 degrees
11:10 degrees
12:11 degrees
13:12 degrees
14:13 degrees
