That is also the only (I think) German single seat typhoon with PIRATE, notice the first number not being 30 or 31. The 98 indicates its part of the WTD 61 (The testing facility), iirc this aircraft used to be a testing bed for the entire program and has since been upgraded to tranche 2 (although Its been a while since I've read that story and am not entirely sure its EXACTLY this aircraft). In service Typhoons of the German air force do not have PIRATE, Germany exited being part of the PIRATE development in 1991 due to cost with the option to implement it later, which hasn't happened (yet).
Edit: This is Instrumented Production Aircraft (IPA) 7 https://www.eurofighter.com/multimedia/details/eads-d-ipa-7-with-heavy-weapon-load-619