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The Engineering Magazine
Fig. 105. Comparison of Daily Electrical Output and Daily Coal Consumption of a Power Plant for the Same Month in Two Succeeding Years
There is a relatively small quantity of power needed on Sundays. In order to make possible a comparison
of the two curves for different years the horizontal scales for days were so placed that the Sundays would
coincide. With curves thus arranged, the low points caused by Christmas do not fall on the same vertical
line, since Christmas is fixed by the day of the month instead of by the day of the week
