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 6, 1976 | Girl Talk Classic | +1 (72-73-72=217) | Playoff | Bonnie Lauer , Sandra Post , Judy Rankin |
| Jul 10, 1977 | Bankers Trust Classic | –6 (75-68-70=213) | 2 strokes | JoAnne Carner , Carol Mann , Kathy Whitworth |
| Jun 25, 1978 | Lady Keystone Open | –10 (70-69-67=206) | 4 strokes | Jane Blalock |
| Jul 30, 1978 | Hoosier Classic | –10 (69-69-68=206) | 3 strokes | JoAnne Carner |
| Sep 4, 1978 | Rail Charity Classic | –12 (67-66-73-71=276) | 4 strokes | Sharon Miller |
| Jul 20, 1980 | Greater Baltimore Golf Classic | –13 (69-70-67=206) | 1 stroke | Nancy Lopez |
| Aug 10, 1980 | Peter Jackson Classic | –15 (65-72-69-71=277) | 1 stroke | JoAnne Carner |
| Mar 29, 1981 | Women's Kemper Open | E (71-75-68-70=284) | 5 strokes | Debbie Massey |
| Jul 26, 1981 | U.S. Women's Open | –9 (71-74-68-66=279) | 1 stroke | Beth Daniel |
| Jan 30, 1983 | Mazda Classic of Deer Creek | –16 (68-69-69-66=272) | 7 strokes | Beth Daniel |
| May 22, 1983 | Chrysler-Plymouth Charity Classic | –7 (73-73-66=212) | 1 stroke | Stephanie Farwig |
| Aug 28, 1983 | Columbia Savings Classic | –11 (71-69-70-67=277) | Playoff | Beth Daniel |
| Nov 13, 1983 | Mazda Japan Classic | –10 (72-70-64=206) | 7 strokes | Laurie Rinker |
| Jun 16, 1985 | Rochester International | –8 (74-67-67-72=280) | 2 strokes | Nancy Lopez |
| Jul 28, 1985 | du Maurier Classic | –10 (70-73-67-68=278) | 1 stroke | Jane Geddes |
| Aug 25, 1985 | LPGA National Pro-Am | –4 (71-74-71-68=284) | Playoff | Amy Alcott |
| Apr 6, 1986 | Nabisco Dinah Shore | –8 (68-72-69-71=280) | 2 strokes | Val Skinner |
| Apr 27, 1986 | S&H Golf Classic | –16 (69-67-71-65=272) | 1 stroke | Janet Coles |
| Jun 1, 1986 | LPGA Championship | –11 (67-72-70-68=277) | 1 stroke | Patty Sheehan |
| Jul 27, 1986 | du Maurier Classic | –12 (73-70-67-66=276) | Playoff | Ayako Okamoto |
| Aug 17, 1986 | Nestle World Championship | –9 (72-72-72-63=279) | 2 strokes | Betsy King , Nancy Lopez |
| Mar 29, 1987 | Standard Register Turquoise Classic | –6 (75-74-67-70=286) | 2 strokes | Christa Johnson |
| Apr 16, 1989 | AI Star/Centinela Hospital Classic | –8 (72 69-67=208) | 1 stroke | Nancy Lopez, Hollis Stacy |
| Feb 4, 1990 | Oldsmobile LPGA Classic | –7 (66-65-74-76=281) | Playoff | Dale Eggeling |
| Mar 25, 1990 | Standard Register Turquoise Classic | –12 (70-71-68-71=280) | 1 stroke | Ayako Okamoto |
| May 27, 1990 | LPGA Corning Classic | –10 (69-70-66-69=274) | 3 strokes | Patty Sheehan |
| May 19, 1991 | Centel Classic | –10 (70-68-69-71=278) | 1 stroke | Ayako Okamoto |
| Sep 3, 1991 | Rail Charity Golf Classic | –19 (67-65-65=197) | 6 strokes | Danielle Ammaccapane |
| Sep 22, 1991 | Safeco Classic | –8 69-67-72-72=280) | Playoff | Rosie Jones |
| Sep 29, 1991 | MBS LPGA Classic | –11 (72-70-67-68=277) | 1 stroke | Michelle Estill |
| Jan 22, 1995 | HealthSouth Inaugural | –5 (71-72-68=211) | 1 stroke | Beth Daniel |
Question:
What was the margin of victory when the runner-up was Janet Coles?
Answer:
1 stroke