The winning New York Numbers numbers for September 15, 1991 were: evening 3-7-1.
Sum is the digits added together (5+5+0 = 10). Root sum keeps adding until one digit is left (10 → 1+0 = 1) — many regular players track it in their notebooks. Odd/Even marks each digit O or E (5-5-0 = OOE). High/Low marks 0–4 as L and 5–9 as H (5-5-0 = HHL).
| Date | Draw | Numbers | Sum | Root |
|---|---|---|---|---|
| Sep 15, 1991 | Evening | 3-7-1 | 11 | 2 |
| Sep 14, 1991 | Evening | 4-0-4 | 8 | 8 |
| Sep 13, 1991 | Evening | 1-0-5 | 6 | 6 |
| Sep 12, 1991 | Evening | 5-6-0 | 11 | 2 |
| Sep 11, 1991 | Evening | 8-5-2 | 15 | 6 |
| Sep 10, 1991 | Evening | 7-1-5 | 13 | 4 |
| Sep 9, 1991 | Evening | 1-6-7 | 14 | 5 |