Records during AHU Validation

During the AHU validation, it is necessary to record the temperature and humidity readings in records for the respective areas ?

yes it is mandatory. It should be record for 3 consecutive working days and 3 reading per a day.

we have been monitoring temp.& RH on daily once.
My question is, during AHU validation, is it necessary to record the values or under AHU validation to be write?

because that time we are calibrate hygrometer and pressure differential also.

So we have to record value that time .

thanks for the awesome information.