If you projected the 15 minute period recorded, at 2.41 miles per a kw of battery electrical energy in the graph picture, where the battery pack has at least 125 kw of usable energy, then you equal 301.25 miles of range. There have been different numbers stated, but the minimum usable amount of the R1s' battery is 125 kilowatts. This occurred at an outside temperature of 23 degrees farhenheit.
This is really positive (to me) but it is not apples to apples as the screenshot is a rolling record of 15 minutes (that is all they provide other than trip records, which I have not yet figured out how to reset. Will try before heading to Belleayre if I remember and can figure it out quickly. I can also tell you, my range was taking a massive hit on the 4 minute drive to drop my son off at 9 am this morning.
It appears (and ppl telling me today who have had Rivian's longer than me) that the biggest hit on the rivian is the beginning of use when the battery has to warm itself to the point where it can take regen energy back and provide output to the motors.
Even with the range hit this morning, there were no performance issues.
Glitch of the day - closing the hatchback, it looked closed but sensored as open. In that situation, neither adaptive cruise control nor driver plus (there 'self driving') was available. Got to next desinitation and opened and manually closed and it was fine.
Also weirdness of the day - someone followed next to me and alternating behind me on the highway for like ten minutes taking an interest in the car. I get it. Maybe 10 minutes is a bit much to do . . . .