| Treatment | Temperature (degC) | Time (h) | Number of modes   | Number of modes |
| Treatment | Temperature (degC) | Time (h) | Constraints guide | Confined guide  |
| HCl       | 250                | 2        | 0                 | 1               |
| HCl+HF    | 250                | 2+2      | 0                 | 1               |
| HCl       | 250                | 5        | 1                 | 2               |
| HCl+HF    | 250                | 5+5 min  | 0                 | 2               |
| HCl+HF    | 250                | 5+2      | 0                 | 2               |
| HCl+HF    | 250                | 5+16     | 0                 | 2               |
|           |                    |          |                   |                 |
| HCl       | 280                | 2        | 1                 | 2               |
| HCl+HF    | 280                | 2+2      | 1                 | 2               |
| HCl+HF    | 280                | 2+5      | 1                 | 2               |
| HCl+HF    | 280                | 2+16     | 1                 | 2               |

Caption: Number of guided modes at l=632.8 nm depending on the exchange time and temperature

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": "250", "type": "Other"}
{"value": "2", "type": "Other"}
{"value": "0", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "250", "type": "Other"}
{"value": "0", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "250", "type": "Other"}
{"value": "5", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "2", "type": "Other"}
{"value": "250", "type": "Other"}
{"value": "0", "type": "Other"}
{"value": "2", "type": "Other"}
{"value": "250", "type": "Other"}
{"value": "0", "type": "Other"}
{"value": "2", "type": "Other"}
{"value": "250", "type": "Other"}
{"value": "0", "type": "Other"}
{"value": "2", "type": "Other"}
{"value": "280", "type": "Other"}
{"value": "2", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "2", "type": "Other"}
{"value": "280", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "2", "type": "Other"}
{"value": "280", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "2", "type": "Other"}
{"value": "280", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "2", "type": "Other"}