Statistics from this survey are impossible to interpret. They are no measure of neither the variation nor the dispersion (min/max, median, standard deviation/variance). We do not know how many respondents they were. Among the 250 respondents maybe only the richest have answered.
One should also note that the salary should represent the annual compensation including all bonuses and perks. I am not sure everyone computes this perfectly for a so short survey. Everyone is free to enter what they wish. In short, it is some garbage information when looked as a direct value for comparison among languages. S.O. knows it as it has shown only the _evolution_ of salary between 2023 and 2024.