ANGLE-OF-ATTACK AAA ADC-L
ANGLE-OF-ATTACK - L AALH ADC-L
ANGLE-OF-ATTACK - R AARH ADC-R
ADC DISCRETE WORD 2 ADCDW2 ADC-L
AILERON POSITION - L OUTER AILL EICAS
AILERON POSITION - R OUTER AILR EICAS
ALTITUDE PRESSURE - L ALT ADC-L
ALTITUDE PRESSURE - R ALTR ADC-R
ALTITUDE RATE ALTRT ADC-R
ENG BLEED DUCT PRESSURE - L BDPL EICAS
ENG BLEED DUCT PRESSURE - R BDPR EICAS
BRAKE TEMP 1 BRKT1 EICAS
BRAKE TEMP 2 BRKT2 EICAS
BRAKE TEMP 3 BRKT3 EICAS
BRAKE TEMP 4 BRKT4 EICAS
BRAKE TEMP 5 BRKT5 EICAS
BRAKE TEMP 6 BRKT6 EICAS
BRAKE TEMP 7 BRKT7 EICAS
BRAKE TEMP 8 BRKT8 EICAS
CALIBRATION WORD CAL DFDAU
COMPUTED AIRSPEED CAS ADC-L
CREW OXYGEN PRESSURE CROXP EICAS
MONTH/DAY DATE CAPT CLOCK
DME FREQ. L DMEFL FMC-L
DME FREQ. R DMEFR FMC-R
DOC DATA WORDS DOCD DFDAU
DRIFT ANGLE DRIFT IRS
DW60 - FCC - CENTER DISCRETE DW60 FCC
DW66 - FCC - RIGHT DISCRETE DW66 FCC
APU EGT EGTAP EICAS
EGT - L EGTL EICAS
EGT - R EGTR EICAS
EICAS DISCRETE WORD 1 EIDW1 EICAS
EICAS DISCRETE WORD 2 EIDW2 EICAS
EICAS DISCRETE WORD 3 EIDW3 EICAS
EICAS DISCRETE WORD 4 EIDW4 EICAS
ELEVATOR SURFACE - L ELL EICAS
ELEVATOR SURFACE - R ELR EICAS
EPR BUG SETTING - L EPRBL TMC
EPR BUG SETTING - R EPRBR TMC
EPR MAX LIMIT EPRMX TMC
FCC DISCRETE 1A FCCDW1 FCC-L
FCC DISCRETE WORD 2 FCCDW2 FCC-L
FCC DISCRETE WORD 3 FCCDW3 FCC-L
FCC DISCRETE WORD 4 FCCDW4 FCC-L
FRAME COUNTER FCNT DFDAU
FLIGHT DIR PITCH LEFT FDPL FCC-L
FLIGHT DIR PITCH CENTRE FDPC FCC-C
FLIGHT DIR PITCH RIGHT FDPR FCC-R
FLIGHT DIR ROLL LEFT FDRL FCC-L
FLIGHT DIR ROLL CENTRE FDRC FCC-C
FLIGHT DIR ROLL RIGHT FDRR FCC-R
FUEL FLOW LEFT FFL EICAS
FUEL FLOW RIGHT FFR EICAS
FAN INLET TOTAL TEMP - L FILTTL EEC-L
FAN INLET TOTAL TEMP - R FILTTR EEC-L
TRAILING EDGE FLAP POSN - L FLAPL Analogue
TRAILING EDGE FLAP POSN -Centre FLCTR Analogue
TRAILING EDGE FLAP POSN -R FLAPR Analogue
FUEL PRESSURE -L FPL EICAS
FUEL PRESSURE - R FPR EICAS
GMT (mandatory) GMT CAPT CLOCK
GMTQ (QAR) GMTQ CAPT CLOCK
GLIDESLOPE DEV - L GSL ILS-L
GLIDESLOPE DEV - Centre GSC ILS-C
GLIDESLOPE DEV - R GSR ILS-R
GLIDESLOPE DEV - EFIS GSE EFIS
GROUNDSPEED GSP EFIS
GROSS WEIGHT - L GWTL FMC-L
GROSS WEIGHT - R GWTR FMC-R
MAGNETIC HEADING HDG EFIS
HORIZONTAL STEERING - L HSTL FMC-L
HORIZONTAL STEERING - R HSTR FMC-R
IEPR - L IEPRL IEPR-L
IEPR - R IEPRR IEPR-R
PRESENT LATITUDE LAT IRS
LATERAL ACCELERATION LATA Analogue
LONGITUDINAL ACCELERATION LNGA Analogue
LOCALISER DEV - L LOCL ILS-L
LOCALISER DEV - C LOCC ILS-C
LOCALISER DEV - R LOCR ILS-R
LOCALISER DEV - EFIS LOCE EFIS
PRESENT LONGITUDE LONG IRS
MACH MACH ADC-R
ENG N1 - RPM - L N1L EICAS
ENG N1 - RPM - R N1R EICAS
ENG N2 - RPM - L N2L EICAS
ENG N2 - RPM - R N2R EICAS
ENG N3 - RPM - L N3L EICAS
ENG N3 - RPM - R N3R EICAS
APU RPM NAP EICAS
VERTICAL ACCELERATION NMLA Analogue
ENG OIL PRESSURE - L OPRL EICAS
ENG OIL PRESSURE - R OPRR EICAS
ENG OIL QTY - L OQL EICAS
ENG OIL QTY - R OQR EICAS
ENG OIL TEMP - L OTL EICAS
ENG OIL TEMP - R OTR EICAS
P1 ENG INLET TOT
PR - L P1L IEPR-L
P1 ENG INLET TOT
PR - R P2R IEPR-R
PITCH ANGLE PITCH EFIS
RADIO HEIGHT - EFIS RALE EFIS
RADIO HEIGHT - CENTRE RALC LRRA-C
RADIO HEIGHT - RIGHT RALR LRRA-R
ROLL ANGLE ROLL EFIS
RUDDER POSITION RUDD EICAS
SELECTED ALTITUDE SLALT FCC MCP
SELECTED ALTITUDE - L SLALTL FMC-L
SELECTED ALTITUDE - R SLALTR FMC-R
SELECTED AIRSPEED SLAS FCC MCP
SELECTED AIRSPEED - L SLASL FMC-L
SELECTED AIRSPEED - R SLASR FMC-R
SELECTED HEADING SLHDG FCC MCP
SELECTED MACH SLM FCC MCP
SELECTED RUNWAY HEADING - L SLRW FCC-L
TEMP SELECT SLTMP TMC
SELECTED VERTICAL SPEED SLVS FCC MCP
SPOILER HANDLE POSITION (Spdbrk) SPBR Analogue
HORIZONTAL STABILIZING POSITION STAB Analogue
STATIC AIR TEMP STAT ADC-L
STATUS WORD STATUS DFDAU
FRAME SYNCHRONISATION SYNC DFDAU
TRUE AIRSPEED TAS ADC-R
TARGET AIRSPEED - L TGASL FMC-L
TARGET AIRSPEED - R TGASR FMC-R
THRUST LEVER ANGLE - L THLAL EEC-L
THRUST LEVER ANGLE - R THLAR EEC-R
TMC DISCRETE WORD 1A TMCDW1 TMC
TMC DISCRETE WORD 2 TMCDW2 TMC
TOTAL AIR TEMP TOTAT ADC-L
TRACK MAGNETIC TRACK EFIS
HMC TRIM F/BACK - L TRFL EEC-L
HMC TRIM F/BACK - R TRFR EEC-L
BUS VOLTS - L VAC EICAS
ENG VIB - L VHL EICAS
ENG VIB - R VHR EICAS
ENG N1 VIB - L VN1L EICAS
ENG N1 VIB - R VN1R EICAS
ENG N2 VIB - L VN2L EICAS
ENG N2 VIB - R VN2R EICAS
ENG N3 VIB - L VN3L EICAS
ENG N3 VIB - R VN3R EICAS
VOR FREQ - L VORFL FMC-L
VOR FREQ - R VORFR FMC-R
VERTICAL STEERING - L VSTL FMC-L
VERTICAL STEERING - R VSTR FMC-R
WIND DIRECTION WA IRS
WIND SPEED WSP IRS
BODY YAW RATE YAWR IRS
That's all the ones for our 757's with the DMEP fitted. I didn't have time to format my cut 'n' paste so you'll have to look for the codes within the text.
The columns are Parameter Name, Mnmonic, Source.
I'll come back later and tidy it up to make it clearer for you but from the last on the list you can see that it's Body Yaw Rate , the code is YAWR and it comes from the IRS.
Cheers, Fargoo 
p.s. As a small disclaimer, these are for one specific airline setup and may not all work on your 757 (most should though).