The heavenly sieve

When the cloud of smoke they exhaled hung, remaining dense and almost motionless, it evoked other images, for example, smog hanging over the roofs of metropolitan buildings and enveloping tarred streets in a dense suffocating mass. And
this is not a light haze of memory and not transparent dryness, but the soot of burned lives formed over the city, a swollen sponge that absorbed living matter and deprived it of movement, clogging the past, present and future, which in
the illusion of movement does not give way to a burnt existence: what you mean
by travel. Italo Calvino's "Invisible Cities"
The work addresses the process of reading and reading as determining the amount of solid particles in a certain area (its scanning and separation of particles by mass into groups with sizes of 10 microns and 2.5 microns), the process of their detection (determining the presence, the deposition process), as well as the metaphorical meaning of the process of reading the weather - graphical dependence of the physical parameters of the medium (pressure humidity, temperature) from the content of solid particles in the atmospheric air of the city, more often described as uncertainty. 
To create a graphic and sound image of the "heavenly sieve" , data from seven sensors of the community were used https://sensor.community/ru / collected during two months for the districts of Yekaterinburg. The data includes the content of solid
particles and indicators of humidity, pressure and temperature. The work also draws attention to the ecological state of  Ekaterinburg as an industrial city. Reading can also be a reference to the definition of an air quality index,
depending, among other things, on the concentration of PM2.5 and PM10 in the air, according to which
Yekaterinburg may or may not meet the WHO recommended annual average air quality.