Readme file for the HeightClasses1942survivorship.csv data file for Orum TV, Ferguson N, Mihail JD. Saguaro (Carnegiea gigantea) Mortality and Population Regeneration in the Cactus Forest of Saguaro National Park: Seventy-Five Years and Counting; PLOS ONE to be submitted. The column names are Year,Survival Count HT=1, Survival Count HT=2, Survival Count HT=3, Survival Count HT=4, Survival Count HT=5, Survival Percent HT=1, Survival Percent HT=2, Survival Percent HT=3,Survival Percent HT=4, Survival Percent HT=5 Data have been derived from SaguaroCensusData.csv using a Microsoft Access query using fields HT42, YRDEAD, and SAGUAROID. For each HT42, group by YRDEAD and count SAGUAROID. Year: The year the survival count was made Survival count HT=1: The number of individuals in 1942 Height Class 1 alive in the Year specified. Survival count HT=2: The number of individuals in 1942 Height Class 2 alive in the Year specified. Survival count HT=3: The number of individuals in 1942 Height Class 3 alive in the Year specified. Survival count HT=4: The number of individuals in 1942 Height Class 4 alive in the Year specified. Survival count HT=5: The number of individuals in 1942 Height Class 5 alive in the Year specified. Survival Percent HT=1: The percentage of individuals in 1942 Height Class 1 alive in the Year specified. Survival Percent HT=2: The percentage of individuals in 1942 Height Class 2 alive in the Year specified. Survival Percent HT=3: The percentage of individuals in 1942 Height Class 3 alive in the Year specified. Survival Percent HT=4: The percentage of individuals in 1942 Height Class 4 alive in the Year specified. Survival Percent HT=5: The percentage of individuals in 1942 Height Class 5 alive in the Year specified.