Of the Mosquito-only raids, the majority took place when the heavies were at home. Any number of Mossies came home "on one", can't agree that the ones that didn't account for most cases. During the daylight raids of '42-'43, overall Mossie loss rates dropped appreciably when they went low-level. Losses to flak went up slightly - if the loss rate to flak had stayed even, the Mossie squadrons could have expected to lose 11.5 aircraft, when in fact they lost 13.