Outline for the owner to write over. Fill in measured numbers; the calculator can show the estimate side by side.
The loop
[Distance, terrain, start and end battery percentage, temperature, rider weight with gear.]
Claimed vs. real
[The manufacturer's claimed range for this board, the range this ride implies, and the gap.]
What ate the battery
[Cold, hills, speed, tire pressure. Which one seemed to matter most.]
Numbers for the calculator
[Watt-hours per mile if the app reports it. These real numbers can replace the calculator's default assumptions.]