| Variable | Definition |
| L2GE_baseObj0 | (encoded) ID of the first base object used to make this object. for example, it could be the ID of an emCluster that was used to make this EMObject, or which cpsCluster contributed to its formation |
| L2GE_baseObj1 | ID of the second base object |
| L2GE_baseObj2 | ID of the third base object |
| L2GE_baseObj3 | ID of the fourth base object |
| L2GE_baseObj4 | ID of the fifth base object |
| L2GE_baseObj5 | ID of the sixth base object |
| L2GE_emFraction | emFraction of the object. this is unchanged from the value reported by the CAL preprocessor to global. EMObjects are made from two trigger towers. emFraction is calculated by summing the Et in the EM calorimeter in the two towers and dividing by the total Et in those two towers. |
| L2GE_eta | Pseudorapidity of the object |
| L2GE_ieta | Integral pseudorapidity of object. there are 160 bins with zero corresponding to -4 and 159 to +4. each bin steps .05 in eta. |
| L2GE_iphi | Integral azimuthal angle of object. there are 160 bins with zero corresponding to zero and 159 to 2PI. each bin steps 2PI/160. |
| L2GE_isolation | isolation as reported by preprocessor. isolation is defined as the EM Et in the two trigger towers forming the object divided by the total Et in the 3by 3 section of the calorimter centered on the seed of the object. |
| L2GE_nEMObjects | number of EMobjects in the event. this is the sum of all EMobjects from all filters, so by itself is meaningless. |
| L2GE_objID | the ID of the object. used by L2gblHead to tell which objects passed a script. there is a list there of all objects passing each script. |
| L2GE_phi | Azimuthal angle of the object |
| L2GE_pt | Transverse momentum of the object |