| Samples | Samples    | 850degC/2h | 960degC/2h  | 1020degC/2h | 1100degC/2h |
| (a)     | Phase      | G          | G+m (trace) | a'          | a'+S+M      |
| (a)     | Emissivity | 0.72+-0.01 | 0.78+-0.01  | 0.90+-0.01  | 0.83+-0.01  |
| (b)     | phase      | G          | m+G (trace) | m           | a+m (trace) |
| (b)     | Emissivity | 0.69+-0.01 | 0.80+-0.01  | 0.82+-0.01  | 0.84+-0.01  |

Caption: The whole-band normal direction emissivity and phase compositions of samples (a) and (b) after various heat treatments

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": "0.72", "type": "Other"}
{"value": "0.78", "type": "Other"}
{"value": "0.90", "type": "Other"}
{"value": "0.83", "type": "Other"}
{"value": "0.69", "type": "Other"}
{"value": "0.80", "type": "Other"}
{"value": "0.82", "type": "Other"}
{"value": "0.84", "type": "Other"}