| Number | Sample      | Nitrogen content (ppm) | Density (g/cm3) | NH and/or NH2 content (ppm) | Foaming by re-heating |
| 1      | As-sintered | 6800+-500              | 2.237+-0.002    | 9+-1                        | observed              |
|        | After HIP   | 6700+-500              | 2.244+-0.002    | 1+-1                        | not observed          |
| 2      | As-sintered | 5800+-500              | 2.236+-0.002    | 6+-1                        | observed              |
|        | After HIP   | 5400+-500              | 2.241+-0.002    | 1+-1                        | not observed          |
| 3      | As-sintered | 1800+-500              | 2.215+-0.002    | 8+-1                        | observed              |
|        | After HIP   | 2400+-500              | 2.224+-0.002    | 3+-1                        | not observed          |
| 4      | As-sintered | 10700+-500             | 2.255+-0.002    | 12+-1                       | observed              |
|        | After HIP   | 10000+-500             | 2.263+-0.002    | 2+-1                        | not observed          |

Caption: Characteristics and foaming behavior of as-sintered and HIP samples

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": "1", "type": "Other"}
{"value": "6800", "type": "Other"}
{"value": "2.237", "type": "Other"}
{"value": "9", "type": "Other"}
{"value": "6700", "type": "Other"}
{"value": "2.244", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "2", "type": "Other"}
{"value": "5800", "type": "Other"}
{"value": "2.236", "type": "Other"}
{"value": "6", "type": "Other"}
{"value": "5400", "type": "Other"}
{"value": "2.241", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "3", "type": "Other"}
{"value": "1800", "type": "Other"}
{"value": "2.215", "type": "Other"}
{"value": "8", "type": "Other"}
{"value": "2400", "type": "Other"}
{"value": "2.224", "type": "Other"}
{"value": "3", "type": "Other"}
{"value": "4", "type": "Other"}
{"value": "10700", "type": "Other"}
{"value": "2.255", "type": "Other"}
{"value": "12", "type": "Other"}
{"value": "10000", "type": "Other"}
{"value": "2.263", "type": "Other"}
{"value": "2", "type": "Other"}