Periods + Censures: you have a series of products that were tested by period and for which the number of product failures between each period are known as well as the number of products having stopped the test without failure for each period (censure) are known. In this case enter the data in this way:
1 column containing the number of cycles at the end of each period, 1 column containing the number of failing products during the given period, 1 column containing the number of products having stopped the tests without failure for this period. (Censures)