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:
| Poll source | Date(s) administered | Tom Campbell* | Meg Whitman | Steve Poizner | Peter Foy* |
| --- | --- | --- | --- | --- | --- |
| Capitol Weekly/Probolsky | January 22–5, 2009 | 15% | 14% | 4% | 1% |
| The Field Poll | February 20–March 1, 2009 | 18% | 21% | 7% | — |
| Capitol Weekly/Probolsky | May 25, 2009 | 13% | 10% | 8% | 1% |
| Research 2000 | August 9, 2009 | 19% | 24% | 9% | — |
| The Field Poll | September 18–October 5, 2009 | 20% | 22% | 9% | — |
| USC/Los Angeles Times | October 27–November 3, 2009 | 27% | 35% | 10% | — |
| Public Policy Institute of California | December 16, 2009 | 12% | 32% | 8% | — |
| The Field Poll | January 5–17, 2010 | — | 45% | 17% | — |
| The Field Poll | January 5–17, 2010 | 22% | 36% | 9% | — |
| Public Policy Institute of California | January 27, 2010 | — | 41% | 11% | — |
| Research 2000 | March 10, 2010 | — | 52% | 19% | — |
| The Field Poll | March 17, 2010 | — | 63% | 14% | — |
| Public Policy Institute of California | March 24, 2010 | — | 61% | 11% | — |
| USC/Los Angeles Times | March 23–30, 2010 | — | 60% | 20% | — |
| Survey USA | April 19–21, 2010 | — | 49% | 27% | — |
| Survey USA | May 6–9, 2010 | — | 39% | 37% | — |
| Research 2000 | May 17–19, 2010 | — | 46% | 36% | — |
| Public Policy Institute of California | May 19, 2010 | — | 38% | 29% | — |
| Public Policy Polling | May 21–23, 2010 | — | 51% | 26% | — |
| USC/Los Angeles Times | May 19–26, 2010 | — | 53% | 29% | — |
| Survey USA | June 3–6, 2010 | — | 59% | 30% | — |
Question:
When did Meg Whitman get 60%?
Answer:
March 23–30, 2010