Abstract
Various quantities in meteorology have more or less the meaning of average and hence unavoidable fluctuations appear on account of the statistical meaning of the observation. These fluctuations are quite different from that of other various errors and it can never be removed by any way, and it is the natural limit of the accuracy of the observation. These limits of various quantities in meteorology, such as, pressure, temperature, wind velocity and so _??_n are calculated and it is found that these natural errors are comparable with errors of the present observation.
