to my mind (т.е. "как мне кажется" Franka_LV); in my opinion (т.е. "по моему мнению" Franka_LV); as far as I can judge; as far as I can see; as far as I can gather; as far as can judge; as far as I can tell (TranslationHelp)

as near as I can guess (george serebryakov); as near as I can tell (george serebryakov)

as far as I this reporter, the doctor, etc. can make out...

насколько я могу судить

: 8 фраз в 3 тематиках