Table 4 Pretreatment dataset for the production process of gas polyethylene pipes (partial data).

From: Research on a multivariate measurement system for polyethylene gas pipelines utilizing a variable weight UMAP model

serial number

Number of measurements

\(\:\varvec{e}\)

\(\:\varvec{D}\)

\(\:\mathbf{d}\)

\(\:\varvec{\delta\:}\)

\(\varvec{\epsilon}\)

1

1

9.804

160.932

141.323

97.650

0.287

2

2

9.804

160.932

141.324

97.651

0.287

3

3

9.804

160.931

141.324

97.649

0.288

4

1

9.805

160.925

141.316

97.645

0.287

5

2

9.804

160.925

141.317

97.645

0.287

6

3

9.804

160.926

141.318

97.645

0.287

7

1

9.806

160.923

141.311

97.639

0.287

8

2

9.806

160.923

141.311

97.637

0.287

9

3

9.806

160.923

141.310

97.638

0.287