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why are the results of R, L, C displayed from Parasitic window and impedance workflow analysis are different

Micheal schenk

I am using the Latest Allegro PCB designer 17.4 S003. I want to calculate the parasitics of trace and used the options available within Allegro and found that results displayed on the parasitic window and impedance workflow analysis window are different. Below are the results.

The query is how can there be two different values for a single trace? 

When I use Display - a parasitic option the results of RLC is as below

TOP CONNECT LINE on network DATA4
Impedance   : 81.142000 ohm
Inductance  : 25.880200 nH
Capacitance : 3.930760 pF (to SHIELD LAYER)
Prop Delay  : 0.31895 ns
Resistance  : 242.521000 mOhm

But when I perform Impedance analysis using workflow manager the results are as follows

Net Name  Vias  No Ref  Max  Min  Typ  Max  Min  Typ  Length  Delay(ns)  R(mOhm)  L(nH)  C(pF)
DATA4 1 0 79.8 79.8 79.8 100 100 100 3869.53 0.564 426.089 45.035 7.066 

 
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