Testing | 1/2010 7/2010 | 7/2010 1/2012 | 1/2012 6/2012 | 7/2012 12/2012 | 1/2013 6/2013 | 7/2013 12/2013 | 1/2016 6/2016 | 7/2016 12/2016 |
Huang model (2005) | 236 | 348 | 217 | 156 | 144 | 118 | 102 | 87 |
Chen’s model (2000) | 118 | 97 | 85 | 88 | 76 | 71 | 83 | 92 |
Proposed model | 85 | 89 | 81 | 74 | 79 | 103 | 86 | 92 |