Code outside a loop only executes once (ie, your DAQ Assistant). A loop doesn't repeat until all the code inside it finishes, including nested loops. If you ran your code with execution highlighting you'd see that the DAQ assistant only runs once, before the loop starts. On the first cycle of the outer loop it gets stuck in the inner loops and never loops again. Finally, indicators outside a loop that are fed by data coming out of a loop, such as the humidity difference, don't receive data until the loop exits. Are you sure everything ran fine with execution highlighting?
