Height/m | Number | Percentage |
0.2 | 42 | 19.7% |
0.4 | 73 | 34.3% |
0.6 | 46 | 21.6% |
0.8 | 8 | 3.8% |
1 | 9 | 4.2% |
1.2 | 1 | 0.5% |
1.4 | 3 | 1.4% |
1.6 | 8 | 3.8% |
1.8 | 7 | 3.3% |
2 | 13 | 6.1% |
3 | 1 | 0.5% |
4 | 2 | 0.9% |