6k is almost the theoretical maximum for a first career, 5 YOE GEO3. It's hard to believe. You need to have everything: NSman, first class hons or master's degree, and A grade every single year. That would have put you around 5.45k before the salary revision, allowing you to cross 6k in Oct.

Realistically speaking, a decent performing 5 YOE GEO3 would be at around 5.7 to 5.9k now.