def METHOD_NAME():
    """Return fake ATMS dataset."""
    atrack = 2
    xtrack = 3
    channel = 22
    lon = np.full((atrack, xtrack), 1.)
    lat = np.full((atrack, xtrack), 2.)
    sat_azi = np.full((atrack, xtrack), 3.)
    antenna_temp = np.zeros((atrack, xtrack, channel))
    for idx in range(channel):
        antenna_temp[:, :, idx] = 100 + float(idx)
    return xr.Dataset(
        data_vars={
            "antenna_temp": (("atrack", "xtrack", "channel"), antenna_temp),
            "lon": (("atrack", "xtrack"), lon),
            "lat": (("atrack", "xtrack"), lat),
            "sat_azi": (("atrack", "xtrack"), sat_azi),
        },
        attrs={
            "time_coverage_start": "2000-01-02T03:04:05Z",
            "time_coverage_end": "2000-01-02T04:05:06Z",
            "platform": "JPSS-1",
            "instrument": "ATMS",
        },
    )