| Sample   | Nitrogen content | Impurities (ppm) | Impurities (ppm) | Impurities (ppm) | Impurities (ppm) | Impurities (ppm) | Impurities (ppm) | Impurities (ppm) |
|          |                  | Al               | Li               | Na               | K                | Ca               | Fe               | OH               |
| N-doped  | 3000             | <0.01            | <0.01            | <0.01            | <0.01            | <0.01            | <0.01            | 0                |
| VAD      | 0                | <0.01            | <0.01            | <0.01            | <0.01            | <0.01            | <0.01            | 100              |
| Type I   | 0                | 6.9              | 0.1              | 0.2              | 0.06             | 0.4              | 0.1              | 10               |
| Type II  | 0                | 7.3              | 0.1              | 0.1              | 0.03             | 0.4              | 0.1              | 300              |
| Type III | 0                | <0.05            | <0.05            | <0.05            | <0.05            | <0.05            | <0.05            | 800              |

Caption: Purity of nitrogen-incorporated silica glasses and representative pure silica glasses

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": "3000", "type": "Other"}
{"value": "0.01", "type": "Other"}
{"value": "0.01", "type": "Other"}
{"value": "0.01", "type": "Other"}
{"value": "0.01", "type": "Other"}
{"value": "0.01", "type": "Other"}
{"value": "0.01", "type": "Other"}
{"value": "0", "type": "Other"}
{"value": "0", "type": "Other"}
{"value": "0.01", "type": "Other"}
{"value": "0.01", "type": "Other"}
{"value": "0.01", "type": "Other"}
{"value": "0.01", "type": "Other"}
{"value": "0.01", "type": "Other"}
{"value": "0.01", "type": "Other"}
{"value": "100", "type": "Other"}
{"value": "0", "type": "Other"}
{"value": "6.9", "type": "Other"}
{"value": "0.1", "type": "Other"}
{"value": "0.2", "type": "Other"}
{"value": "0.06", "type": "Other"}
{"value": "0.4", "type": "Other"}
{"value": "0.1", "type": "Other"}
{"value": "10", "type": "Other"}
{"value": "0", "type": "Other"}
{"value": "7.3", "type": "Other"}
{"value": "0.1", "type": "Other"}
{"value": "0.1", "type": "Other"}
{"value": "0.03", "type": "Other"}
{"value": "0.4", "type": "Other"}
{"value": "0.1", "type": "Other"}
{"value": "300", "type": "Other"}
{"value": "0", "type": "Other"}
{"value": "0.05", "type": "Other"}
{"value": "0.05", "type": "Other"}
{"value": "0.05", "type": "Other"}
{"value": "0.05", "type": "Other"}
{"value": "0.05", "type": "Other"}
{"value": "0.05", "type": "Other"}
{"value": "800", "type": "Other"}