Operation      a=         b=           c=      Independent?  Derived from                                                                                                                        
PC12      -4.0000E-07  3.9158E-02  -1.6961E+00  Partially    The 'a' term taken from Agilkia. 'b' and 'c' terms derived from m/z=18 of WGA3 and m/z=44 terms of WGA3 and WGA4.                   
Lutetia   -4.0000E-07  3.8037E-02  -9.9389E-01  Partially    The 'a' term taken from Agilkia. 'b' and 'c' terms derived from m/z=18 of WGA3 and m/z=44 terms of WGA3 and WGA4.                   
Lutetia   -4.0000E-07  3.9279E-02  -1.5408E+00  Partially    The 'a' term taken from Agilkia. 'b' and 'c' terms derived from m/z=18 of WGA3 and m/z=44 and 45 terms of WGA3 and WGA4.            
Lutetia   -4.0000E-07  3.9429E-02  -1.7052E+00  Partially    The 'a' term taken from Agilkia. 'b' and 'c' terms derived from m/z=18, 19, 28 of WGA3 and m/z=43 and 44 terms of WGA3 and WGA4.    
Lutetia   -4.0000E-07  3.9429E-02  -1.7052E+00  No           Taken from Lutetia 3                                                                                                                
Lutetia   -4.0000E-07  3.9429E-02  -1.7052E+00  No           Taken from Lutetia 3                                                                                                                
PHC       -4.0000E-07  3.9565E-02  -1.9714E+00  Partially    The 'a' taken from Agilkia. 'b' and 'c' terms determined using m/z = 15, 17, 18, 19, 44 from WGA3 and m/z = 41 and 44 from WGA4.    
PDCS1A    -4.0000E-07  3.9506E-02  -1.9011E+00  Partially    The 'a' taken from Agilkia. 'b' and 'c' terms determined using m/z = 16, 17, 18, from WGA3 and m/z = 44, 44 and 45 from WGA4.       
PDCS1B    -4.0000E-07  3.9506E-02  -1.9011E+00  No           Taken from PDCS1A                                                                                                                   
PDCS2A    -4.0000E-07  3.9245E-02  -1.5226E+00  Partially    The 'a' takern from Agilkia. 'b' and 'c' taken from m/z=18 from WGA3 and m/z=44 from WGA4                                           
PDCS2B    -4.0000E-07  3.9427E-02  -1.8325E+00  Partially    The 'a' takern from Agilkia. 'b' and 'c' taken from m/z=17, 18, 19, 27, 28, 29, 30, 41, 43, 44 from WGA3 and m/z=40 and 44 from WGA4
PDCS3A    -4.0000E-07  3.9506E-02  -1.9011E+00  No           Taken from PDCS1A as carrier gas in PDCS2B renders the conditions different                                                         
PDCS3B    -4.0000E-07  3.9506E-02  -1.9011E+00  No           Taken from PDCS1A as carrier gas in PDCS2B renders the conditions different                                                         
PDCS4A    -4.0000E-07  3.9506E-02  -1.9011E+00  No           Taken from PDCS1A as carrier gas in PDCS2B renders the conditions different                                                         
PDCS4B    -4.0000E-07  3.9506E-02  -1.9011E+00  No           Taken from PDCS1A as carrier gas in PDCS2B renders the conditions different                                                         
Agilkia   -3.9500E-07  3.9646E-02  -2.0514E+00  Yes          Full calibration using 35 peaks across WGA3 and WGA4                                                                                
Abydos 1  -4.0000E-07  4.0065E-02  -2.3854E+00  Partially    The 'a' taken from Agilkia. 'b' and 'c' terms taken from m/z= 17, 18, 19, 28 and 44 from WGA3, and m/z = 44, 73 and 76 from WGA4    
Abydos 2  -4.0000E-07  4.0065E-02  -2.3854E+00  No           Taken from Abydos 1                                                                                                                 
Abydos 3  -4.0000E-07  4.0117E-02  -2.1955E+00  Partially    The 'a' taken from Agilkia. 'b' and 'c' terms taken from m/z= 17, 18, 19, and 44 from WGA3, and m/z = 44 from WGA4                  
Abydos 4  -4.0000E-07  3.9681E-02  -1.9757E+00  Partially    The 'a' taken from Agilkia. 'b' and 'c' terms taken from m/z= 18 and 44 from WGA3, and m/z = 44 from WGA4                           
Abydos 5  -4.0000E-07  3.9418E-02  -1.6869E+00  Partially    The 'a' taken from Agilkia. 'b' and 'c' terms taken from m/z= 18 and 44 from WGA3, and m/z = 44 from WGA4                           
Abydos 6  -4.0000E-07  3.8986E-02  -1.1612E+00  Partially    The 'a' taken from Agilkia. 'b' and 'c' terms taken from m/z= 18 and 44 from WGA3, and m/z = 44 from WGA4                           
                                                                                                                                                                                                 
Average -3.9975E-07  3.9455E-02 -1.8146E+00                                                                                                                                                      
StDev    1.1555E-09  4.1946E-04  3.2919E-01