f"{tqdm_desc} ({parsed_files} file(s) kept, {(1-(tend+dt-t).total_seconds()/(tend-tstart+2*dt).total_seconds())*100:.1f}% through the observing window)"
f"{tqdm_desc} ({parsed_files} file(s) kept, {(1-(tend+dt-t).total_seconds()/(tend-tstart+2*dt).total_seconds())*100:.1f}% through the observing window)"