The idea to make the table of calculation of height the sun above horizon in Saint-Petersburg, time of astronomical noon and value of azimuth to the sun was, in the beginning, in order to accurate installation of solar panels. It appears, however, that that information may be of interest not only to engineers, but also a wide range of users.
For example, the height of the sun above the horizon often look the scolars. Perhaps this information will be useful to gardeners, for optimal orientation of flowerbeds and greenhouses.
Generally, the height of the sun above the horizon depends on latitude, on the equator the altitude of the sun at noon is 90 degrees, and on the pole, during polar night can be negative.
Hope this information will help you in your projects !