Gives the distribution of experimentally obtained values of time delay of electrical breakdown (td). Measurements of td were made on a specially made nitrogen-filled diode at 13.33 mbar pressure. The results show that the distribution form is easily identifiable after about 500 successively measured td values, and that its form may be estimated after about 100 successively measured td values. These distributions were fitted using the least-squares polynomial approximation method. It was found that the best approximation is obtained by the seventh-order polynomial. Laue's distributions for three groups of successively measured td values, in the range of one millisecond to several seconds, have the same form as those previously obtained by Meek and Craggs (1978), where td values were of the order of one microsecond.