| Material | Anther exposure rate (%) | Degree of exposure (%) | Fullness | Overview | ||||||
| 2013 | 2014 | Mean Value | 2013 | 2014 | Mean Value | 2013 | 2014 | Mean Value | ||
| HK902 | 77.13 | 77.19 | 77.16 | 100 | 100 | 100 | high | high | high | good |
| HK950 | 78.13 | 77.86 | 78.00 | 100 | 100 | 100 | high | high | high | good |