grades

{
    'Viktoriya Krasteva': 4.46,
    'Preslav Iliev': 2.31,
    'Borislav Iliev': 5.36,
    'Dzhaner Sabriev': 6.6000000000000005,
    'Emiliyan Valchev': 5.61,
    'Petko Komarov': 4.95,
    'Taliya Ubcheva': 5.28,
    'Vladimir Zlatev': 5.94,
    'Denis Zhekov': 4.79,
    'Kadir Kadir': 4.790000000000001,
    'Nikolay Nedelchev': 5.61,
    'Kristiyan Tsvyatkov': 6.2700000000000005,
    'Nataliya Georgieva': 6.680000000000001
  }