implies that at least one M-26 group had a CEP of ~400ft vs the airforce standard of 1,000ft.
https://www.afresearch.org/skins/rims/q ... ay.aspx?...
The squadron had been trained in low level, formation bombing procedures in the States but initial operational experience in the theater proved that tactic was too dangerous.43 B-26s were ordered to operate at medium altitudes (7,000-9,000 feet) for the remainder of the war unless there was little or no anti-aircraft artillery threat.44 Only the lead ships were usually equipped with the Norden bombsights and the other planes in the box formation would bomb off the lead aircraft. Initial accuracy results of these daylight visual bombing missions were not impressive
Given the SOP for target selection I'd strongly suspect that the dressing station was not targeted but was collateral damage.