The winning New York Win 4 numbers for December 15, 1991 were: evening 9-4-3-9.
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 |
|---|---|---|---|---|
| Dec 15, 1991 | Evening | 9-4-3-9 | 25 | 7 |
| Dec 14, 1991 | Evening | 9-6-2-9 | 26 | 8 |
| Dec 13, 1991 | Evening | 2-8-1-4 | 15 | 6 |
| Dec 12, 1991 | Evening | 8-5-7-9 | 29 | 2 |
| Dec 11, 1991 | Evening | 1-3-9-0 | 13 | 4 |
| Dec 10, 1991 | Evening | 4-0-9-7 | 20 | 2 |
| Dec 9, 1991 | Evening | 3-9-3-7 | 22 | 4 |