Bond Index Remark : 1. The base date is 4 January 2021. 2. Group 1 [ttm=1] covers 0.5<ttm<=1.5. Group 2 [ttm=2] covers 1.5<ttm<=2.5. Group 3 [ttm=3] covers 2.5<ttm<=3.5. Group 4 [ttm=4] covers 3.5<ttm<=4.5. Group 5 [ttm=5] covers 4.5<ttm<=5.5. <3. For the calculation manual of the index, please click here.