| Glass | Density (g/cm3) | T g (degC) | Thermal expansion coefficient (x10-7 degC-1) | Refractive index (at 632.8 nm) |
| TN    | 5.025           | 268        | 235                                          | 2.165                          |
| TNA1  | 4.850           | 292        | 215                                          | 2.130                          |
| TNA2  | 4.694           | 320        | 190                                          | 2.087                          |
| TNG1  | 4.948           | 276        | 234                                          | 2.127                          |
| TNG2  | 4.938           | 289        | 217                                          | 2.090                          |
| TNG3  | 4.923           | 302        | 201                                          | 2.052                          |
| TNT1  | 4.890           | 281        | 227                                          | 2.181                          |
| TNT2  | 4.847           | 300        | 211                                          | 2.192                          |

Caption: Densities, thermal properties and refractive indices of the sample 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": "5.025", "type": "Other"}
{"value": "268", "type": "Other"}
{"value": "235", "type": "Other"}
{"value": "2.165", "type": "Other"}
{"value": "4.850", "type": "Other"}
{"value": "292", "type": "Other"}
{"value": "215", "type": "Other"}
{"value": "2.130", "type": "Other"}
{"value": "4.694", "type": "Other"}
{"value": "320", "type": "Other"}
{"value": "190", "type": "Other"}
{"value": "2.087", "type": "Other"}
{"value": "4.948", "type": "Other"}
{"value": "276", "type": "Other"}
{"value": "234", "type": "Other"}
{"value": "2.127", "type": "Other"}
{"value": "4.938", "type": "Other"}
{"value": "289", "type": "Other"}
{"value": "217", "type": "Other"}
{"value": "2.090", "type": "Other"}
{"value": "4.923", "type": "Other"}
{"value": "302", "type": "Other"}
{"value": "201", "type": "Other"}
{"value": "2.052", "type": "Other"}
{"value": "4.890", "type": "Other"}
{"value": "281", "type": "Other"}
{"value": "227", "type": "Other"}
{"value": "2.181", "type": "Other"}
{"value": "4.847", "type": "Other"}
{"value": "300", "type": "Other"}
{"value": "211", "type": "Other"}
{"value": "2.192", "type": "Other"}