>>> import pandas as pd
>>> from bd_arbres import arbres_gruixuts

--ini-enunciat

>>> df = pd.read_csv('arbres.csv', index_col='Tree_ID')
>>> s = arbres_gruixuts(df, 25)
>>> isinstance(s, pd.Series)  # comprovació que la funció retorna una Series
True
>>> list(s.index)
['Up to 5', '> 20.1', '15.1-20', '10.1- 15', '5.1-10']
>>> list(s.values)
[160, 211, 407, 3208, 4173]
>>> s = arbres_gruixuts(df.iloc[:1000], 50)
>>> list(s.index)
['5.1-10', '10.1- 15']
>>> list(s.values)
[1, 4]

--fi-enunciat

>>> s = arbres_gruixuts(df.iloc[100:300], 30)
>>> list(s.index)
['10.1- 15', '5.1-10']
>>> list(s.values)
[2, 7]
>>> s = arbres_gruixuts(df, 800)
>>> list(s.index)
['10.1- 15', '5.1-10']
>>> list(s.values)
[1, 1]