Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Outcome | Year | Championship | Surface | Partner | Opponents | Score |
| --- | --- | --- | --- | --- | --- | --- |
| Runner-up | 2002.0 | Berlin | Clay | Arantxa Sánchez Vicario | Elena Dementieva Janette Husárová | 6–0, 6–7, 2–6 |
| Runner-up | 2002.0 | San Diego | Hard | Ai Sugiyama | Conchita Martínez Virginia Ruano Pascual | 7–6 (9–7) , 1–6, 5–7 |
| Runner-up | 2005.0 | Zurich | Hard (i) | Ai Sugiyama | Cara Black Rennae Stubbs | 7–6 (8-6) , 6–7 (4-7) , 3–6 |
| Winner | 2006.0 | Rome | Clay | Ai Sugiyama | Elena Dementieva Francesca Schiavone | 3–6, 6–3, 6–1 |
| Runner-up | 2009.0 | Rome | Clay | Ai Sugiyama | Hsieh Su-wei Peng Shuai | 5-7, 6-7 (5-7) |
| Runner-up | 2009.0 | Tokyo | Hard | Ai Sugiyama | Alisa Kleybanova Francesca Schiavone | 4-6, 2-6 |
Question:
Name the number of surfaces for  4-6, 2-6
Answer:
1.0