With the definitions

DT_17  =  TB(183±1) - TB(183±7)
DT_13  =  TB(183±1) - TB(183±3)

DT_37  =  TB(183±3) - TB(183±7)

the criteria are:

             for Deep Convection:              DT_17 > 0,     DT_13 > 0,   and   DT_37 > 0

         for Convective Overshooting::   DT_17  >  DT_13  >  DT_37   >   0