At work, I am engaged in the automation of production in heat networks.
Analyzing the equipment operation schedules, you can get a lot of interesting information, and sometimes - to find the pulse of the holiday!
An example is an amazing New Year greeting from Vodokanal.
We choose the parameter - pressure of cold water, the period - the area of the New Year and carefully look ...

Before the New Year, people come together - clean your apartment, take a bath with friends, do the dishes and prepare meals for a year. The result of water is not enough for everyone and the pressure begins to fall.
Closer to midnight, everyone sits at the holiday table, watching TV, congratulating each other. Naturally, do not use water and the pressure reaches a maximum value.
After the holiday table responsible housewives begin to wash the dishes. The pressure starts to drop again.
Then people walk, watch a movie and gradually fall asleep. The pressure is increasing.
In the morning the city sleeps, because the first day is the shortest!
On the graph of the pressure of cold water, you can observe the pulse of the holiday, and what is most interesting is the New Year tree at midnight! Moreover, the shape of this spruce is very similar to
the cone that people like to put on squares in recent years.
A similar graph is observed at all sites. Somewhere it is less pronounced, somewhere stronger, but reflects some of the problems of housing and public utilities - lack of water, clogged pipelines, weak booster pumps, lack of frequency drives.
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At the meeting in 2014, the situation with the schedule of pressure repeated.
