|      | SiO2     | PbO      | K2O       | BaO       | ZrO2      |
| Wt%  | 28 (<1%) | 66 (<8%) | 0.3 (<2%) | 4.1 (<5%) | 1.3 (<6%) |
| Mol% | 58       | 36.8     | 0.4       | 3.4       | 1.4       |

Caption: Glass composition (uncertainty of the measure - Analysis SARM, CRPG Nancy)

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": "28", "type": "Glass_Compound_Amount", "constituent": "SiO2", "unit": "wt", "material": "xx"}
{"value": "66", "type": "Glass_Compound_Amount", "constituent": "PbO", "unit": "wt", "material": "xx"}
{"value": "0.3", "type": "Glass_Compound_Amount", "constituent": "K2O", "unit": "wt", "material": "xx"}
{"value": "4.1", "type": "Glass_Compound_Amount", "constituent": "BaO", "unit": "wt", "material": "xx"}
{"value": "1.3", "type": "Glass_Compound_Amount", "constituent": "ZrO2", "unit": "wt", "material": "xx"}
{"value": "58", "type": "Glass_Compound_Amount", "constituent": "SiO2", "unit": "mol", "material": "xx"}
{"value": "36.8", "type": "Glass_Compound_Amount", "constituent": "PbO", "unit": "mol", "material": "xx"}
{"value": "0.4", "type": "Glass_Compound_Amount", "constituent": "K2O", "unit": "mol", "material": "xx"}
{"value": "3.4", "type": "Glass_Compound_Amount", "constituent": "BaO", "unit": "mol", "material": "xx"}
{"value": "1.4", "type": "Glass_Compound_Amount", "constituent": "ZrO2", "unit": "mol", "material": "xx"}