def electra1(df):
    maxim = df['Valor'].max()
    df1 = df[df['Valor'] > 0.95*maxim]
    df2 = df1.sort_values(by='Valor', ascending=False)
    return df2

def electra2(df, sector):
    df1 = df[df['Sector_Economic'] == sector]
    gb = df1.groupby('Tram_Horari')
    s1 = gb['Valor'].sum()
    return s1.idxmax(), s1.max()