import pandas

def read(filename):
    # Get time
    df = pandas.read_csv(filename,skiprows=0,nrows=1)
    time = df['t (s)'].to_numpy()[0]

    df = pandas.read_csv(filename,skiprows=2)
    x   = df['r (m)'].to_numpy()
    phi = df['phi (V)'].to_numpy()
    n_e = df['n_e (m^-3)'].to_numpy()

    return time, x, phi, n_e