Hello,

There are lighting measurements and a questionnaire data. The questionnaire was prepared by the author in compliance with the program of the Polytechnic University of Tirana and with the consent of students. The survey was conducted with the acceptance of participants (respondents and students). This text is in the paper.

Figure 1 can be published. Source of the figure 1 is shown in the paper.

Figure 2 is self-made. i.e., calculations made by the author.

Supplementary material can also be published. Questionnaire (S1) is prepared by the author. Explanation of the questionnaires is shown in the text of the paper. Table S2 are calculations made by the author.

Thank you in advance,

Kuenda