Song: "Since I Don't Have You"
Artist: Art Garfunkel
Peak position on the Cashbox Singles chart: #52
Number of weeks on the Cashbox Singles chart: 9
Weekly data:
| Week ending | Rank | Title | Artist | Label |
|---|---|---|---|---|
| June 2, 1979 | 85 | Since I Don't Have You | Art Garfunkel | Columbia 10999 |
| June 9, 1979 | 76 | Since I Don't Have You | Art Garfunkel | Columbia 10999 |
| June 16, 1979 | 68 | Since I Don't Have You | Art Garfunkel | Columbia 10999 |
| June 23, 1979 | 61 | Since I Don't Have You | Art Garfunkel | Columbia 10999 |
| June 30, 1979 | 56 | Since I Don't Have You | Art Garfunkel | Columbia 10999 |
| July 7, 1979 | 53 | Since I Don't Have You | Art Garfunkel | Columbia 10999 |
| July 14, 1979 | 52 | Since I Don't Have You | Art Garfunkel | Columbia 10999 |
| July 21, 1979 | 64 | Since I Don't Have You | Art Garfunkel | Columbia 10999 |
| July 28, 1979 | 99 | Since I Don't Have You | Art Garfunkel | Columbia 10999 |
Rankings greater than 100 are from the Cashbox 'Looking Ahead' charts.