Here we have time represented by days in the horizontal direction and by hours in the vertical direction. The object of the chart is to record whether car-floats are loaded and dispatched at the same hour each
Dotted lines show the time at which cars are pushed onto car-floats by locomotives. Solid line.s show the time at which car-floats are towed away by tug-boats. Curves for any one car-float destination are in pairs bearing the same letter.
If the departure schedule is well maintained, all curve lines will be practically horizontal. Note that the blizzard of January 7 affected the locomotives less than the tug-boats
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