I have a box which is kept at 4C which is enclosed in a ziploc bag. The dimensions of the box are: 18cm x 13.4cm x 4.9cm. The relative humidity of this internal environment is 30% at this temperature. The relative humidity of the fridge is 72%. What would the relative humidity be of the same system with the same volume of water be at 37C and what relative humidity should the 37C incubator be set to to achieve this?