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