| Reports | Count |
|---|---|
| Unspecified | 6355 |
| Changing | 3601 |
| Chevron | 1618 |
| Cigar | 3539 |
| Circle | 15012 |
| Cone | 566 |
| Cross | 462 |
| cylinder | 2290 |
| Delta | 33 |
| Diamond | 2035 |
| Disk | 8342 |
| Egg | 1213 |
| Fireball | 9689 |
| Flash | 2383 |
| Formation | 4669 |
| Light | 28453 |
| Other | 9665 |
| Oval | 6098 |
| Rectangle | 2447 |
| Sphere | 9184 |
| Star | 82 |
| Teardrop | 1201 |
| Triangle | 12586 |
| Unknown | 9565 |