Код для Главы 1, 2, 3, 4.
master
create: 2021_Russian_data.csv, 2022_Russian_data.csv
create: GLAVA_1.ipynb, GLAVA_2.ipynb
create: 119.mat, GLAVA_4.ipynb
create: NotebookGlava4.ipynb, delete: NotebookGlava4.ipynb
update: README.md