what is the total number of region on the chart?
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col : # | massif | region | type of nature reserve | preserved area | buffer zone row 1 : 1 | chornohora | zakarpattia | carpathian biosphere reserve | 2476.8 ha | 12925 ha row 2 : 2 | uholka / wide meadow | zakarpattia | carpathian biosphere reserve | 11860 ha | 3301 ha row 3 : 3 | svydovets | zakarpattia | carpathian biosphere reserve | 3030.5 ha | 5639.5 ha row 4 : 4 | maramoros | zakarpattia | carpathian biosphere reserve | 2243.6 ha | 6230.4 ha row 5 : 5 | kuziy / trybushany | zakarpattia | carpathian biosphere reserve | 1369.6 ha | 3163.4 ha row 6 : 6 | stuzhytsia / uzhok | zakarpattia | uzh national nature park | 2532 ha | 3615 ha row 7 : 7 | stužica / bukovské vrchy | presov | poloniny national park | 2950 ha | 11300 ha row 8 : 8 | rožok | presov | presov preserved areas | 67.1 ha | 41.4 ha row 9 : 9 | vihorlat | presov | presov preserved areas | 2578 ha | 2413 ha row 10 : 10 | havešová | presov | presov preserved areas | 171.3 ha | 63.9 ha row 11 : 11 | jasmund | mecklenburg-vorpommern | jasmund national park | 492.5 ha | 2510.5 ha row 12 : 12 | serrahn | mecklenburg-vorpommern | müritz national park | 268.1 ha | 2568 ha row 13 : 13 | grumsiner forest | brandenburg | grumsiner forest nature reserve | 590.1 ha | 274.3 ha row 14 : 14 | hainich | thuringia | hainich national park | 1573.4 ha | 4085.4 ha row 15 : 15 | kellerwald | hesse | kellerwald-edersee national park | 1467.1 ha | 4271.4 ha
what is the total number of region on the chart?
# Massif Region Type of nature reserve Preserved area Buffer zone
1 Chornohora Zakarpattia Carpathian Biosphere Reserve 2476.8 ha 12925 ha
2 Uholka / Wide Meadow Zakarpattia Carpathian Biosphere Reserve 11860 ha 3301 ha
3 Svydovets Zakarpattia Carpathian Biosphere Reserve 3030.5 ha 5639.5 ha
4 Maramoros Zakarpattia Carpathian Biosphere Reserve 2243.6 ha 6230.4 ha
5 Kuziy / Trybushany Zakarpattia Carpathian Biosphere Reserve 1369.6 ha 3163.4 ha
6 Stuzhytsia / Uzhok Zakarpattia Uzh National Nature Park 2532 ha 3615 ha
7 Stužica / Bukovské vrchy Presov Poloniny National Park 2950 ha 11300 ha
8 Rožok Presov Presov Preserved areas 67.1 ha 41.4 ha
9 Vihorlat Presov Presov Preserved areas 2578 ha 2413 ha
10 Havešová Presov Presov Preserved areas 171.3 ha 63.9 ha
11 Jasmund Mecklenburg-Vorpommern Jasmund National Park 492.5 ha 2510.5 ha
12 Serrahn Mecklenburg-Vorpommern Müritz National Park 268.1 ha 2568 ha
13 Grumsiner Forest Brandenburg Grumsiner Forest Nature Reserve 590.1 ha 274.3 ha
14 Hainich Thuringia Hainich National Park 1573.4 ha 4085.4 ha
15 Kellerwald Hesse Kellerwald-Edersee National Park 1467.1 ha 4271.4 ha
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