add epoxy or wood filler, sand, then power wash? or is table burnt?
epoxy? amazon: https://www.amazon.com/gp/product/B009EU5ZM0/ref=ox_sc_act_title_2?smid=ATVPDKIKX0DER&psc=1
woodfiller? amazon: https://www.amazon.com/gp/product/B0007ZG9T4/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1