Like any other bike, your e-bike needs a safe place to be stored while not in use. The increasing value of e-bikes makes them a prime target for thieves. Maintaining a safe area to keep your e-bike and locking it to a secure anchor on the ground should be your priority.
The bike standover height refers to the entire length spanning the frame's top tube down to the ground, measured just in front of the saddle where your crotch area would be located. It's simply the distance between the ground and the very height of the top tube.