EV only (in %) driving Prius Plug In gen 1 ?

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Unfortunately our car went from 22 % (aug 2019) to 20% (nov 2019) and down to 16 %  (mid dec 2019) EV only driving since we need to drive our gen 1 car some 60 km trip (about 37.28 miles I think) four times a week,(regularly) without charging and most of that distance are at highway speed 110 km/h ( 68.3 miles/h I think) since mid dec 2019. Now ( a bit warmer weather and just two of those 60 km trip ,about 37.28 miles I think, with most of that distance are at highway speed 110 km/h without charging.The other two weekly trips done with our Prius+ 2017) our Prius Plug In 2015 gen1 computer says 19 % EV only driving.

What EV only %(as pictured)  do You get from Your Prius Plug In gen1 ?

 

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Yesterdays numbers/results

Would be nice if You, Plug In Gen 1 owners have the possibility to share Your "EV only %" (as pictured)