|                    | BS 75-10-15        | BS 80-10-10        | Commercial         |
| Composition (at.%) | Composition (at.%) | Composition (at.%) | Composition (at.%) |
| Na                 | 8.3                | 5.8                | 2.4                |
| B(IV)              | 4.1                | 4.4                | 2.2                |
| NBOs               | 4.2                | 1.4                | 0.2                |
|                    |                    |                    |                    |
| Density            | Density            | Density            | Density            |
| r (g/cm3)          | 2.41               | 2.38               | 2.23               |

Caption: Measured sodium and 4-fold coordinated boron, B(IV), content and calculated NBOs (at%) compared to density for the glasses considered in the present work

You are provided with a table from a material science paper. Here are JSON templates for two types of numeric cells: "Other" and "Glass_Compound_Amount":
{"value": "xx", "type": "Other"}
{"value": "xx", "type": "Glass_Compound_Amount", "constituent": "xx", "unit": "xx", "material": "xx"}

Please describe all numeric cells in the above table following the JSON templates (proceeding by row in a left-right, top-down direction). For each cell, output one JSON description per line. For any unanswerable attributes in the templates, set their value to the placeholder "xx".

Cell Description:
{"value": "8.3", "type": "Other"}
{"value": "5.8", "type": "Other"}
{"value": "2.4", "type": "Other"}
{"value": "4.1", "type": "Other"}
{"value": "4.4", "type": "Other"}
{"value": "2.2", "type": "Other"}
{"value": "4.2", "type": "Other"}
{"value": "1.4", "type": "Other"}
{"value": "0.2", "type": "Other"}
{"value": "2.41", "type": "Other"}
{"value": "2.38", "type": "Other"}
{"value": "2.23", "type": "Other"}