However, at the height of the storm Jan. 6, Metra dramatically slashed service. Ridership that day was only about one-third of normal weekday ridership. Yet of the diminished service offered, only 30 percent of trains operated on time.

http://www.chicagotribune.com/news/local/ct-cta-metra-house-mass-transit-hearing-met-0211-20140211,0,5757523.story