Nucs

The bees were only in the Nuc for a day and a half and I installed the Nuc frames into my hive the day I picked them up as i was told to do by the store. Upon opening the lid I noticed that nearly 50% of the population was dead. I proceeded with the installation and was happy i did, if 1.5 days was too long then what would have been the affects of another 24hrs which is recommended by most beekeepers.