It has been a useful historical document for learning the movements of the sekkan-ke of the cloister government period since it has more detailed articles than the "Chuyuki" (diary written by FUJIWARA no Munetada) and "Choshuki" (diary of MINAMOTO no Morotoki).
部分的に『中右記』や『長秋記』よりも詳細な記事があり、院政期の摂関家の動向について知る上で有用な歴史資料となっている。