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Table 1 Evaluation of the similarity of 20 Pu-erh green tea samples using their common model of chromatographic fingerprints

From: Comparative analysis of volatiles difference of Yunnan sun-dried Pu-erh green tea from different tea mountains: Jingmai and Wuliang mountain by chemical fingerprint similarity combined with principal component analysis and cluster analysis

Sample no.

Correlation coefficient

Congruence coefficient (R)

Median

Average

Median

Average

J1

0.6347

0.6741

0.7254

0.7525

J2

0.7110

0.7465

0.7743

0.8009

J3

0.5918

0.6542

0.6947

0.7382

J4

0.7544

0.7076

0.8278

0.7912

J5

0.6534

0.7082

0.7149

0.7580

J6

0.6028

0.6284

0.6920

0.7096

J7

0.5844

0.6141

0.6893

0.7083

J8

0.5931

0.6554

0.6880

0.7329

I9

0.5614

0.6502

0.6453

0.7133

J10

0.6515

0.6715

0.7293

0.7433

W1

0.6770

0.7901

0.7344

0.8230

W2

0.7012

0.7299

0.7553

0.7782

W3

0.8195

0.8075

0.8596

0.8510

W4

0.7935

0.7840

0.8237

0.8185

W5

0.7292

0.8262

0.7703

0.8480

W6

0.7086

0.8081

0.7580

0.8366

W7

0.7788

0.7947

0.8291

0.8411

W8

0.7489

0.7336

0.7973

0.7863

W9

0.6789

0.6942

0.7399

0.7518

W10

0.6877

0.7878

0.7385

0.8180