def find_dmag_rec(s, data, **kwargs):
    """
    Returns demagnetization data for specimen s from the data. Excludes other
    kinds of experiments and "bad" measurements

    Parameters
    __________
    s : specimen name
    data : DataFrame with measurement data
    **kwargs :
        version : if not 3, assume data model = 2.5
    Returns
    ________
    datablock : nested list of data for zijderveld plotting
         [[tr, dec, inc, int, ZI, flag],...]
         tr : treatment step
         dec : declination
         inc : inclination
         int : intensity
         ZI : whether zero-field first or infield-first step
         flag : g or b , default is set to 'g'
     units : list of units found ['T','K','J'] for tesla, kelvin or joules
    """
    if 'version' in list(kwargs.keys()) and kwargs['version'] == 3:
        # convert dataframe to list of dictionaries
        data = data.to_dict('records')
        spec_key, dec_key, inc_key = 'specimen', 'dir_dec', 'dir_inc'
        flag_key, temp_key, ac_key = 'flag', 'treat_temp', 'treat_ac_field'
        meth_key = 'method_codes'
        power_key, time_key = 'treat_mw_power', 'treat_mw_time'
        Mkeys = ['magn_moment', 'magn_volume', 'magn_mass', 'magnitude']
        # just look in the intensity column
        inst_key = 'instrument_codes'
    else:
        spec_key, dec_key, inc_key = 'er_specimen_name', 'measurement_dec', 'measurement_inc'
        flag_key = 'measurement_flag'
        flag_key, temp_key, ac_key = 'measurement_flag', 'treatment_temp', 'treatment_ac_field'
        meth_key = 'magic_method_codes'
        power_key, time_key = 'treatment_mw_power', 'treatment_mw_time'
        Mkeys = ['measurement_magn_moment', 'measurement_magn_volume',
                 'measurement_magn_mass', 'measurement_magnitude']
        inst_key = 'magic_instrument_codes'

    EX = ["LP-AN-ARM", "LP-AN-TRM", "LP-ARM-AFD", "LP-ARM2-AFD", "LP-TRM-AFD",
          "LP-TRM", "LP-TRM-TD", "LP-X"]  # list of excluded lab protocols
    INC = ["LT-NO", "LT-AF-Z", "LT-T-Z",
           "LT-M-Z", "LP-PI-TRM-IZ", "LP-PI-M-IZ"]
    datablock, tr = [], ""
    therm_flag, af_flag, mw_flag = 0, 0, 0
    units = []
    spec_meas = get_dictitem(data, spec_key, s, 'T')
    for rec in spec_meas:
        if flag_key not in list(rec.keys()):
            rec[flag_key] = 'g'
        skip = 1
        tr = ""
        meths = rec[meth_key].split(":")
        methods = []
        for m in meths:
            methods.append(m.strip())  # get rid of the stupid spaces!
        for meth in methods:
            if meth.strip() in INC:
                skip = 0
        for meth in EX:
            if meth in methods:
                skip = 1
        if skip == 0:
            if "LT-NO" in methods:
                tr = float(rec[temp_key])
            if "LT-AF-Z" in methods:
                af_flag = 1
                try:
                    tr = float(rec[ac_key])
                except (KeyError, ValueError):
                    tr = 0
                if "T" not in units:
                    units.append("T")
            if "LT-T-Z" in methods:
                therm_flag = 1
                tr = float(rec[temp_key])
                if "K" not in units:
                    units.append("K")
            if "LT-M-Z" in methods:
                mw_flag = 1
                tr = float(rec[power_key]) * float(rec[time_key])
                if "J" not in units:
                    units.append("J")
            # looking for in-field first thellier or microwave data -
            # otherwise, just ignore this
            if "LP-PI-TRM-IZ" in methods or "LP-PI-M-IZ" in methods:
                ZI = 0
            else:
                ZI = 1
            if tr != "":
                dec, inc, int = "", "", ""
                if dec_key in list(rec.keys()) and cb.not_null(rec[dec_key], False):
                    dec = float(rec[dec_key])
                if inc_key in list(rec.keys()) and cb.not_null(rec[inc_key], False):
                    inc = float(rec[inc_key])
                for key in Mkeys:
                    if key in list(rec.keys()) and cb.not_null(rec[key], False):
                        int = float(rec[key])
                if inst_key not in list(rec.keys()):
                    rec[inst_key] = ''
                datablock.append(
                    [tr, dec, inc, int, ZI, rec[flag_key], rec[inst_key]])
    if therm_flag == 1:
        for k in range(len(datablock)):
            if datablock[k][0] == 0.:
                datablock[k][0] = 273.
    if af_flag == 1:
        for k in range(len(datablock)):
            if datablock[k][0] >= 273 and datablock[k][0] <= 323:
                datablock[k][0] = 0.
    meas_units = ""
    if len(units) > 0:
        for u in units:
            meas_units = meas_units + u + ":"
        meas_units = meas_units[:-1]
    return datablock, meas_units