Function use_arlo 

pub fn use_arlo(echo_times: &[f64], tolerance: f64) -> bool

Check if echo times are approximately equi-spaced (suitable for ARLO).

Requires at least 3 echo times with spacing deviations below tolerance.

Arguments

• echo_times - Echo times in seconds
• tolerance - Maximum allowed deviation from uniform spacing (seconds, e.g. 0.1e-3)