| System   | Reagents     | Crucible | Melting temperature (degC) | Melting time (min) |
| PbO-B2O3 | PbO, H3BO3   | Pt       | 950                        | 30                 |
| BaO-B2O3 | BaCO3, H3BO3 | Pt       | 1200                       | 60                 |
| SrO-B2O3 | SrCO3, H3BO3 | Pt       | 1350                       | 60                 |

Caption: Batch melting 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": "950", "type": "Other"}
{"value": "30", "type": "Other"}
{"value": "1200", "type": "Other"}
{"value": "60", "type": "Other"}
{"value": "1350", "type": "Other"}
{"value": "60", "type": "Other"}