| Sample name                  | G     | GC1   | GC2   | GC3   | GC4   |
| Heat treated time at 660degC | 0h    | 4h    | 8h    | 16h   | 32h   |
| Er3+ concentration (mol/dm3) | 1.796 | 1.785 | 1.783 | 1.776 | 1.784 |
| Density (g/cm3)              | 3.046 | 3.030 | 3.028 | 3.015 | 3.030 |
| Thickness (cm)               | 0.150 | 0.156 | 0.156 | 0.156 | 0.156 |
| n C (at 656.3nm)             | 1.527 | 1.530 | 1.530 | 1.530 | 1.525 |
| n D (at 589.3nm)             | 1.530 | 1.533 | 1.532 | 1.532 | 1.528 |
| n F (at 486.1nm)             | 1.535 | 1.539 | 1.538 | 1.538 | 1.533 |

Caption: Heat treated mode and some physical properties of the samples

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": "1.796", "type": "Other"}
{"value": "1.785", "type": "Other"}
{"value": "1.783", "type": "Other"}
{"value": "1.776", "type": "Other"}
{"value": "1.784", "type": "Other"}
{"value": "3.046", "type": "Other"}
{"value": "3.030", "type": "Other"}
{"value": "3.028", "type": "Other"}
{"value": "3.015", "type": "Other"}
{"value": "3.030", "type": "Other"}
{"value": "0.150", "type": "Other"}
{"value": "0.156", "type": "Other"}
{"value": "0.156", "type": "Other"}
{"value": "0.156", "type": "Other"}
{"value": "0.156", "type": "Other"}
{"value": "1.527", "type": "Other"}
{"value": "1.530", "type": "Other"}
{"value": "1.530", "type": "Other"}
{"value": "1.530", "type": "Other"}
{"value": "1.525", "type": "Other"}
{"value": "1.530", "type": "Other"}
{"value": "1.533", "type": "Other"}
{"value": "1.532", "type": "Other"}
{"value": "1.532", "type": "Other"}
{"value": "1.528", "type": "Other"}
{"value": "1.535", "type": "Other"}
{"value": "1.539", "type": "Other"}
{"value": "1.538", "type": "Other"}
{"value": "1.538", "type": "Other"}
{"value": "1.533", "type": "Other"}