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Aside from the normal pattern of lines, this map of Zürich's commuter trains also shows the departures of the normal weekday service. It's not just made by some group of transit enthusiasts, but actually supplied on their official website. (Though they also have a normal, less complicated line map)
solid lines: hourly train, with arrival and departure minutes written before and after each stop. Note the numbers are left of the line, as swiss trains run on the left track
dashed lines: bi-hourly train, with departures of uneven hours in italics
dash-dotted lines: peak services