| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | Plitvice Lakes National Park - Routes and distances |  |  |  |  |
| 3 | Lake | altitude (m) | area (ha) | depth (m) | Group |
| 4 | Prošćansko jezero | 636 | 69.0 | 37 | Upper Lakes |
| 5 | Ciginovac | 625 | 7.5 | 11 | Upper Lakes |
| 6 | Okrugljak | 613 | 4.1 | 15 | Upper Lakes |
| 7 | Batinovac | 610 | 1.5 | 6 | Upper Lakes |
| 8 | Veliko jezero | 607 | 1.5 | 8 | Upper Lakes |
| 9 | Malo jezero | 605 | 2.0 | 10 | Upper Lakes |
| 10 | Vir | 599 | 0.6 | 5 | Upper Lakes |
| 11 | Galovac | 585 | 12.5 | 25 | Upper Lakes |
| 12 | Milinovo jezero | 576 | 1.0 | 1 | Upper Lakes |
| 13 | Gradinsko jezero | 553 | 8.1 | 10 | Upper Lakes |
| 14 | Buk | 545 | 0.1 | 2 | Upper Lakes |
| 15 | Kozjak | 535 | 81.5 | 47 | Upper Lakes |
| 16 | Milanovac | 523 | 3.2 | 19 | Lower Lakes |
| 17 | Gavanovac | 519 | 1.0 | 10 | Lower Lakes |
| 18 | Kaluđerovac | 505 | 2.1 | 13 | Lower Lakes |
| 19 | Novakovića brod | 503 | 0.4 | 5 | Lower Lakes |
| 20 | Plitvice Lakes | - | 217.0 | - | - |

Question: How many Plitvice Lakes are there and what is the range of altitudes?
Answer: The 16 Plitvice Lakes are separated into an upper and lower group formed between the mountains, descending from an altitude of 636 to 503 m.