Largely explained in this trip report.
Crust on south-west and east faces which don’t see enough sun. Transformed snow on south-east aspects. Some powder on south faces where the slopes have been sheltered from the wind.
Ridge lines are windswept. Heavy powder on north aspects but wind affected at altitude, for example on Thursday we had to descend from 2700m to 2350m to find powder snow, higher up the surface was wind scoured.