| Heat-treatment conditions | Heat-treatment conditions | N(m -3) [10] | T C  (degC) | c(mPa -1) |
| Temperature               | Time                      |              |             |           |
| 455degC                   | 4.0 h                     | 1.53x1013    | 646.1       | 0.193     |
|                           | 8.0 h                     | 5.19x1013    | 639.0       | 0.164     |
|                           | 15.0 h                    | 11.60x1013   | 632.3       | 0.159     |
|                           |                           |              |             |           |
| 464degC                   | 1.0 h                     | 0.27x1013    | 658.1       | 0.233     |
|                           | 2.0 h                     | 0.95x1013    | 647.1       | 0.219     |
|                           | 4.0 h                     | 2.31x1013    | 643.5       | 0.184     |
|                           | 8.0 h                     | 4.98x1013    | 636.1       | 0.184     |
|                           | 15.0 h                    | 9.65x1013    | 632.4       | 0.169     |
|                           |                           |              |             |           |
| 481degC                   | 0.5 h                     | 0.15x1013    | 660.3       | 0.265     |
|                           | 1.0 h                     | 0.30x1013    | 655.4       | 0.245     |
|                           | 3.0 h                     | 0.86x1013    | 648.1       | 0.219     |
|                           | 20.0 h                    | 5.74x1013    | 635.9       | 0.177     |
|                           |                           |              |             |           |
| 497degC                   | 5.0 h                     | 0.30x1013    | 651.9       | 0.274     |
|                           | 8.0 h                     | 0.49x1013    | 651.7       | 0.234     |

Caption: Relationship between the number density and T C for Li2O*2SiO2 glass heat-treated under various conditions

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": "646.1", "type": "Other"}
{"value": "0.193", "type": "Other"}
{"value": "639.0", "type": "Other"}
{"value": "0.164", "type": "Other"}
{"value": "632.3", "type": "Other"}
{"value": "0.159", "type": "Other"}
{"value": "658.1", "type": "Other"}
{"value": "0.233", "type": "Other"}
{"value": "647.1", "type": "Other"}
{"value": "0.219", "type": "Other"}
{"value": "643.5", "type": "Other"}
{"value": "0.184", "type": "Other"}
{"value": "636.1", "type": "Other"}
{"value": "0.184", "type": "Other"}
{"value": "632.4", "type": "Other"}
{"value": "0.169", "type": "Other"}
{"value": "660.3", "type": "Other"}
{"value": "0.265", "type": "Other"}
{"value": "655.4", "type": "Other"}
{"value": "0.245", "type": "Other"}
{"value": "648.1", "type": "Other"}
{"value": "0.219", "type": "Other"}
{"value": "635.9", "type": "Other"}
{"value": "0.177", "type": "Other"}
{"value": "651.9", "type": "Other"}
{"value": "0.274", "type": "Other"}
{"value": "651.7", "type": "Other"}
{"value": "0.234", "type": "Other"}