# 19 categories
slope in degrees

0.00 0.00 0.00 0.00
18.5:19.5:19 degrees
17.5:18.5:18 degrees
16.5:17.5:17 degrees
15.5:16.5:16 degrees
14.5:15.5:15 degrees
13.5:14.5:14 degrees
12.5:13.5:13 degrees
11.5:12.5:12 degrees
10.5:11.5:11 degrees
9.5:10.5:10 degrees
8.5:9.5:9 degrees
7.5:8.5:8 degrees
6.5:7.5:7 degrees
5.5:6.5:6 degrees
4.5:5.5:5 degrees
3.5:4.5:4 degrees
2.5:3.5:3 degrees
1.5:2.5:2 degrees
0.5:1.5:1 degree
0:0.5:zero slope
