|                                            | Salt A  | Salt B   | Salt C   | Salt D   |
| Mech. strength (MPa)                       | 294+-93 | 320+-173 | 614+-197 | 616+-186 |
| Surface compression (MPa)                  | 285     | 270      | 475      | 450      |
| Specific surface compression (MPa/K+ mole) | 159     | 67       | 70       | 73       |

Caption: Mechanical strength, surface compression and specific surface compression for the samples treated in the different salt baths.

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": "294", "type": "Other"}
{"value": "320", "type": "Other"}
{"value": "614", "type": "Other"}
{"value": "616", "type": "Other"}
{"value": "285", "type": "Other"}
{"value": "270", "type": "Other"}
{"value": "475", "type": "Other"}
{"value": "450", "type": "Other"}
{"value": "159", "type": "Other"}
{"value": "67", "type": "Other"}
{"value": "70", "type": "Other"}
{"value": "73", "type": "Other"}