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:
| Date | Tournament | Winning score | Margin of victory | Runner(s)-up |
| --- | --- | --- | --- | --- |
| Jun 23, 1968 | LPGA Championship | +2 (72-75-74-73=294) | Playoff | Kathy Whitworth |
| Apr 2, 1978 | Colgate-Dinah Shore Winner's Circle | −5 (65-74-72-72=283) | Playoff | Penny Pulz |
| Aug 20, 1978 | Lady Stroh's Open | −2 (69-71-71-75=286) | Playoff | Pat Meyers , Kathy Whitworth |
| Apr 8, 1979 | Colgate-Dinah Shore Winner's Circle | −12 (68-70-68-70=276) | 1 stroke | Nancy Lopez |
| May 13, 1979 | Lady Michelob | −9 (72-69-69=210) | 2 strokes | Pat Bradley |
| Sep 23, 1979 | ERA Real Estate Classic | −8 (71-73-70-70=284) | 2 strokes | Donna Caponi |
| Aug 3, 1980 | West Virginia LPGA Classic | −5 (69-69-73=211) | Playoff | Donna Caponi |
| Jun 7, 1981 | McDonald's Kids Classic | −6 (69-69-73-71=282) | 2 strokes | Amy Alcott |
Question:
When was the winning score −6 (69-69-73-71=282)?
Answer:
Jun 7, 1981