The fields include (but not limited to ) the following:
GCZ7 SEQNUM_QT 8.56052e+06
GCZ7 TRDVOL_1 1
GCZ7 SEQNUM 8.56052e+06
GCZ7 NETCHNG_1 2.9
GCZ7 PCTCHNG 0.23
GCZ7 NUM_MOVES 5602
GCZ7 VWAP 1276.65
GCZ7 ACVOL_1 14018
GCZ7 TRDPRC_1 1277.5
GCZ7 PRIMACT_1 1277.5
GCZ7 SEC_ACT_1 2.9
GCZ7 SEQNUM 8.56052e+06
GCZ7 ACVOL_1 14018
GCZ7 BID 1277.5
GCZ7 BIDSIZE 44
GCZ7 SEQNUM 8.56052e+06
GCZ7 SEQNUM_QT 8.56052e+06
GCZ7 BID 1277.5
GCZ7 BIDSIZE 60
GCZ7 SEQNUM 8.56052e+06
GCZ7 SEQNUM_QT 8.56052e+06
GCZ7 ASK 1277.6
GCZ7 ASKSIZE 20
GCZ7 TRDVOL_1 1
GCZ7 SEQNUM 8.56054e+06
GCZ7 NETCHNG_1 3
GCZ7 PCTCHNG 0.24
GCZ7 NUM_MOVES 5603
GCZ7 VWAP 1276.65
GCZ7 ACVOL_1 14019
GCZ7 TRDPRC_1 1277.6
GCZ7 PRIMACT_1 1277.6
GCZ7 SEC_ACT_1 3
GCZ7 SEQNUM 8.56054e+06
GCZ7 ACVOL_1 14019
GCZ7 ASK 1277.6
GCZ7 ASKSIZE 20
GCZ7 SEQNUM 8.56055e+06
GCZ7 SEQNUM_QT 8.56055e+06
GCZ7 BID 1277.5
GCZ7 BIDSIZE 61
GCZ7 SEQNUM 8.56055e+06
GCZ7 SEQNUM_QT 8.56055e+06
GCZ7 ASK 1277.6
GCZ7 ASKSIZE 18
GCZ7 SEQNUM 8.56056e+06
GCZ7 SEQNUM_QT 8.56056e+06
GCZ7 BID 1277.5
GCZ7 BIDSIZE 60
GCZ7 ASK 1277.6
GCZ7 ASKSIZE 17
GCZ7 SEQNUM 8.56056e+06
GCZ7 SEQNUM_QT 8.56056e+06
GCZ7 ASK 1277.6
GCZ7 ASKSIZE 13
GCZ7 SEQNUM 8.56056e+06
GCZ7 SEQNUM_QT 8.56056e+06
GCZ7 TRDVOL_1 1
GCZ7 SEQNUM 8.56057e+06