The following MTZ items can be converted to mmCIF tokens, if exist. 

  mmCIF                            Data_type  MTZ labels   
                                              (possible)   
 _refln.wavelength_id                 .           .              Always written
 _refln.crystal_id                    .           .              Always written
 _refln.scale_group_code              .           .              Always written
 _refln.index_h                       H           K              Always written
 _refln.index_k                       H           K              Always written
 _refln.index_l                       H           L              Always written
 _refln.status            	      I           RFREE          Always written
                                                                                           
 _refln.F_meas_au         	      F           FP, F_X2    
 _refln.F_meas_sigma_au               Q           SIGFP, SIGF_X2  
 _refln.F_calc            	      F           FC     
 _refln.phase_calc        	      P           PHIC   
 _refln.phase_meas        	      P           PHIB   
 _refln.fom               	      W           FOM    
 _refln.intensity_meas    	      J           I      
 _refln.intensity_sigma   	      Q           SIGI   
                                                                                           
 _refln.pdbx_HL_A_iso                 A       	HLA    
 _refln.pdbx_HL_B_iso                 A       	HLB    
 _refln.pdbx_HL_C_iso                 A       	HLC    
 _refln.pdbx_HL_D_iso                 A       	HLD    
 _refln.pdbx_F_plus         	      G           F(+)   
 _refln.pdbx_F_plus_sigma   	      L           SIGF(+)
 _refln.pdbx_F_minus        	      G           F(-)   
 _refln.pdbx_F_minus_sigma  	      L           SIGF(-)
 _refln.pdbx_anom_difference          D           DANO   
 _refln.pdbx_anom_difference_sigma    Q           SIGDANO
 _refln.pdbx_I_plus                   K           I(+)   
 _refln.pdbx_I_plus_sigma             M           SIGI(+)
 _refln.pdbx_I_minus                  K           I(-)   
 _refln.pdbx_I_minus_sigma            M           SIGI(-)      



All other columns of MTZ will NOT be converted, if exist.

Note:
The MTZ labels are assigned by users. The label name varies. Listed are the most used one. The data_type is fixed by the CCP4 program. Our conversion will use the data_type and guess the labels to get correct conversion. Normally 98% successful rate for the auto-mode. The rest 2% can be done by the semi-auto.