|                        | WG1       | WG2       |
| ZrF4                   | 46.5      | 52        |
| LaF3                   | 40        | 36        |
| ErF3                   | 13.5      | 12        |
| AlF3                   | <2        | <2        |
| Thickness (mm)         | 2.0       | 2.4       |
| n at 633nm             | TE 1.5251 | TE 1.5269 |
| n at 633nm             | TM 1.5251 | TM 1.5274 |
| n at 1540nm            | TE 1.5143 | TE 1.5166 |
| n at 1540nm            | TM 1.5147 | TM 1.5171 |
| Loss at 633nm (dB/cm)  | 1.6       | 1.7       |
| Loss at 1304nm (dB/cm) | 1.2       | -         |

Caption: Composition (+-1mol%), thickness, refractive index (+-0.0005) and propagation loss (+-0.1dB/cm) of amorphous ZELA waveguides

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": "46.5", "type": "Glass_Compound_Amount", "constituent": "ZrF4", "unit": "mol", "material": "WG1"}
{"value": "52", "type": "Glass_Compound_Amount", "constituent": "ZrF4", "unit": "mol", "material": "WG2"}
{"value": "40", "type": "Glass_Compound_Amount", "constituent": "LaF3", "unit": "mol", "material": "WG1"}
{"value": "36", "type": "Other"}
{"value": "13.5", "type": "Glass_Compound_Amount", "constituent": "ErF3", "unit": "mol", "material": "WG1"}
{"value": "12", "type": "Other"}
{"value": "2", "type": "Glass_Compound_Amount", "constituent": "AlF3", "unit": "mol", "material": "WG1"}
{"value": "2", "type": "Glass_Compound_Amount", "constituent": "AlF3", "unit": "mol", "material": "WG2"}
{"value": "2.0", "type": "Other"}
{"value": "2.4", "type": "Other"}
{"value": "1.6", "type": "Other"}
{"value": "1.7", "type": "Other"}
{"value": "1.2", "type": "Other"}