<Tr> <Td> Turkey </Td> <Td> Muhammed Munir Gungen </Td> <Td> 145.0 </Td> <Td> 475 </Td> <Td> Rukatunturi </Td> <Td> 2016 </Td> <Td> </Td> </Tr> <Tr> <Td> Georgia </Td> <Td> Koba Tsakadze </Td> <Td> 142.0 </Td> <Td> 466 </Td> <Td> Vikersund </Td> <Td> 1967 </Td> <Td> </Td> </Tr> <Tr> <Td> Spain </Td> <Td> Bernat Sola </Td> <Td> 141.0 </Td> <Td> 463 </Td> <Td> Tauplitz </Td> <Td> 1986 </Td> <Td> </Td> </Tr> <Tr> <Td> Hungary </Td> <Td> Gábor Gellér </Td> <Td> 139.0 </Td> <Td> 456 </Td> <Td> Harrachov </Td> <Td> 1980s </Td> <Td> </Td> </Tr>

Why are there tracks on the ski jump