Following are the list of references which we used to collect data and make it accurate as possible but still data may vary depending on regions.
[1] https://www.uni-due.de/isa/auswahl_frm_en.html
[2] https://www.academics.com/career-advice/salaries-in-germany
[3] http://www.absolventa.de/jobs/channel/finance/thema/gehalt-filialleiter
[4] https://gehaltsreporter.de/
[5] https://www.iamexpat.de/career/working-in-germany/salary-payslip-german-minimum-wage
[6] https://www.degreequery.com/highest-paid-careers-social-sciences/
[7] https://www.payscale.com/research/US/Job=Software_Engineer/Salary
[8] https://www.deutschland.de/en/topic/business/salaries-in-germany-according-to-profession-who-earns-what
Dashbord is strongly inspired by Diethard Steiner’s Block:
http://bl.ocks.org/diethardsteiner/3287802