Figure 1.
![The process of manufacturing quality container glass [3]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/6470707b83f1392090d6986a/j_acee-2021-035_fig_001.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251024%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251024T125727Z&X-Amz-Expires=3600&X-Amz-Signature=e7f4b16588c67eff39fdd14bca5aa5908eef60182bd7b95a0c81eec94806eccf&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 2.

Figure 3.

Dataframe with melting of particular glass colors over several years for the analyzed furnace
| Glass color | Number of records | Data share, % |
|---|---|---|
| Flint | 3200 | 80 |
| Green | 400 | 10 |
| Amber | 400 | 10 |

![The process of manufacturing quality container glass [3]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/6470707b83f1392090d6986a/j_acee-2021-035_fig_001.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251024%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251024T125727Z&X-Amz-Expires=3600&X-Amz-Signature=e7f4b16588c67eff39fdd14bca5aa5908eef60182bd7b95a0c81eec94806eccf&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)


| Glass color | Number of records | Data share, % |
|---|---|---|
| Flint | 3200 | 80 |
| Green | 400 | 10 |
| Amber | 400 | 10 |
© 2022 Przemysław DEC, Anna SKOREK-OSIKOWSKA, published by Silesian University of Technology
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