(9)For the purpose of calculating the indicative Union-wide performance target ranges for the capacity KPA, consideration should be given firstly to the historical capacity performance of Air Navigation Service Providers (‘ANSPs’), with a focus on the air traffic flow management (‘ATFM’) delays due to air traffic control (‘ATC’) capacity restrictions or ATC staffing reasons. Secondly, to the historical occurrence of air navigation service disruptions due to non-ATC related causes together with the impact of adverse weather-related delays on capacity provision. Thirdly, to the capacity improvement plans of ‘ANSPs’ which are included in the European Network Operations Plan referred to in Article 9 of Implementing Regulation (EU) 2019/123, in its Annexes published in April 2023note. In respect of operational benefits expected in RP4 from the air traffic management (‘ATM’) functionalities part of the SESAR ‘Common Project One’ and laid down in Commission Implementing Regulation (EU) 2021/116note, for the development of indicative Union-wide performance target ranges for RP4 consideration should be given to the analysis produced by the SESAR Deployment Manager and annexed to the PRB report.