| Element M | R M/R Sn | R M/R Si | D   H   mix   M - Sn     (kJ/mol) | D   H   mix   M - Si     (kJ/mol) |
| Cu        | 0.789    | 1.108    | -7                                | -19                               |
| Zr        | 0.989    | 1.390    | -43                               | -84                               |
| Ti        | 0.901    | 1.266    | -21                               | -66                               |

Caption: Atomic-size ratios R m /R Sn,Si and heats of mixing DH mix between element M (M=Cu, Zr, Ti) and microalloying elements Sn and Si

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": "0.789", "type": "Other"}
{"value": "1.108", "type": "Other"}
{"value": "0.989", "type": "Other"}
{"value": "1.390", "type": "Other"}
{"value": "0.901", "type": "Other"}
{"value": "1.266", "type": "Other"}