|                                      | Alkali germanate glasses | Alkali germanate glasses | Alkali germanate glasses | Alkali germanate glasses | Alkali germanate glasses | Alkali germano-phosphate glasses | Alkali germano-phosphate glasses | Alkali germano-phosphate glasses | Alkali germano-phosphate glasses | Alkali germano-phosphate glasses | Alkali germano-phosphate glasses | Alkali germano-phosphate glasses | Alkali germano-phosphate glasses | Alkali germano-phosphate glasses |
|                                      | Li                       | Na                       | K                        | Rb                       | Cs                       | Sodium                           | Sodium                           | Sodium                           | Potassium                        | Potassium                        | Potassium                        | Rubidium                         | Rubidium                         | Rubidium                         |
|                                      |                          |                          |                          |                          |                          | 8:1                              | 6:1                              | 4:1                              | 8:1                              | 6:1                              | 4:1                              | 8:1                              | 6:1                              | 4:1                              |
| Density maximum                      | 17.5-20                  | 15                       | 10                       | 15                       | 17.5                     | 19                               | 19                               | 25                               | 8                                | 10                               | 12                               | 20                               | 25                               | 20                               |
| Predicted maximum from Raman spectra | 17.5-20                  | 15                       | 15                       | 12.5                     | 12.5                     | 19                               | 25                               | 25                               | 20                               | 21                               | 25                               | 20                               | 18                               | 15                               |

Caption: Maximum in density of alkali germanate and alkali germano-phosphate glasses vs. maximum density predicted from Raman data

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": "8", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "6", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "4", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "8", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "6", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "4", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "8", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "6", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "4", "type": "Other"}
{"value": "1", "type": "Other"}
{"value": "17.5", "type": "Other"}
{"value": "20", "type": "Other"}
{"value": "15", "type": "Other"}
{"value": "10", "type": "Other"}
{"value": "15", "type": "Other"}
{"value": "17.5", "type": "Other"}
{"value": "19", "type": "Other"}
{"value": "19", "type": "Other"}
{"value": "25", "type": "Other"}
{"value": "8", "type": "Other"}
{"value": "10", "type": "Other"}
{"value": "12", "type": "Other"}
{"value": "20", "type": "Other"}
{"value": "25", "type": "Other"}
{"value": "20", "type": "Other"}
{"value": "17.5", "type": "Other"}
{"value": "20", "type": "Other"}
{"value": "15", "type": "Other"}
{"value": "15", "type": "Other"}
{"value": "12.5", "type": "Other"}
{"value": "12.5", "type": "Other"}
{"value": "19", "type": "Other"}
{"value": "25", "type": "Other"}
{"value": "25", "type": "Other"}
{"value": "20", "type": "Other"}
{"value": "21", "type": "Other"}
{"value": "25", "type": "Other"}
{"value": "20", "type": "Other"}
{"value": "18", "type": "Other"}
{"value": "15", "type": "Other"}