The top three regarding the 'average number of quotations' are Japan Science and Technology Agency, RIKEN, and National Institutes of Natural Sciences, followed by universities, such as Tokyo Institute of Technology and Tokyo Medical and Dental University, other than Imperial Universities, thus Imperial Universities did not have precedence.
但し、「平均被引用数」では上位3位を振興機構・理研・自然科学研究機構で占める上に、東京工業大学や東京医科歯科大学など非帝大系が健闘するなど帝大優位とは必ずしも言い難い。