visualize data with a heat map.
this is the implementation of the task from the freecodecamp course - data visualization projects. data taken from http://www.pogodaiklimat.ru/history/34730.htm. the data is completely real, they represent the average air temperatures for each past month from 1881 to 2022. they have also been processed for presentation in a different form and are stored in a files/data.json.
the results are:
