窗口宽度

光谱范围/cm−1

主因子数(Rank)

预测标准偏差(RMSEP)

决定系数(R2)

90

798.5~843.5

6

0.4411836

0.7138322

100

770.5~854.5

6

0.3622627

0.8085771

110

772.5~853.5

6

0.3518059

0.8193895

120

777.5~859.5

6

0.3594466

0.8111282

130

779.5~871.5

7

0.2815012

0.8835243

140

777.5~893.3

7

0.2473274

0.9096269

150

760.5~881.5

7

0.2347383

0.9182303

160

755.5~841.5

8

0.3506788

0.8176704

170

752.5~892.5

8

0.288771

0.8939719

180

754.5~894.5

8

0.2189412

0.9289605

190

749.5~840.5

9

0.3357593

0.834475