Replication Data for: Fig 17.7, WTPDs, Mean juvenile body mass vs litter size, 23 June 2026

Litter size = litter size at first emergence of offspring from their natal nursery-burrow = number of weanlings. Mixing occurred when juveniles of one litter mixed/interacted/slept with juveniles from another nearby litter before I could capture, eartag, and mark all juveniles from both litters. See chapter 5 for details.

When mixing occurred, I sometimes could not determine either exact litter sizes or maternities for every juvenile. This EXCEL file does NOT show the Cumulative body mass for each litter, which can be calculated by multiplying the Mean juvenile body mass per litter by litter size. Fig 17.7 for WTPDs DOES show the Cumulative body mass for each litter The Cumulative body mass (Mean + SD) BY LITTER SIZE is shown below in the SYSTAT output.

For these data for The Cumulative body mass (Mean + SD) BY LITTER, I am certain that the Means are accurate but I am NOT certain that the SEMs are accurate. File name = Fig 17.7, WTPDs, Litter size vs mean and cumulative offspring body masses, 26 March 2025 Date = 27 March 2025 Here I get summary stats for file = Fig 17.7, WTPDs, Litter size vs mean and cumulative offspring body masses, 27 March 2025 ▼Descriptive Statistics YEAR LITTSIZE OFFSPRINGBODYMA- CUMULATIVEOFFBO- SS DYMASS N of Cases 150 148 147 147 Minimum 2,006.00 2 121.8 385 Maximum 2,012.00 8 315.5 1,370.40 Arithmetic Mean 2,008.89 5.108 189.285 930.462 Standard Error of Arithmetic Mean 0.148 0.119 3.138 16.632 Standard Deviation 1.818 1.453 38.05 201.651 ▼Descriptive Statistics And now for stats BY WTPD LITTER SIZE Results for LITTSIZE = YEAR LITTSIZE OFFSPRINGBODYMA- CUMULATIVEOFFBO- SS DYMASS N of Cases 2 0 0 0 Minimum 2,010.00 . . .

Maximum 2,011.00 . . . Arithmetic Mean 2,010.50 . . . Standard Error of Arithmetic Mean 0.5 . . .

Standard Deviation 0.707 . . . Results for LITTSIZE = 2.000 YEAR LITTSIZE OFFSPRINGBODYMA- CUMULATIVEOFFBO- SS DYMASS N of Cases 8 8 8 8 Minimum 2,006.00 2 192.5 385 Maximum 2,011.00 2 315.5 631 Arithmetic Mean 2,008.75 2 255.313 510.625 Standard Error of Arithmetic Mean 0.648 0 15.464 30.928 Standard Deviation 1.832 0 43.739 87.477 Results for LITTSIZE = 3.000 YEAR LITTSIZE OFFSPRINGBODYMA- CUMULATIVEOFFBO- SS DYMASS N of Cases 15 15 14 14 Minimum 2,007.00 3 180.3 540.9 Maximum 2,011.00 3 278.3 834.9 Arithmetic Mean 2,008.80 3 227.95 683.85 Standard Error of Arithmetic Mean 0.368 0 7.116 21.348 Standard Deviation 1.424 0 26.626 79.877 Results for LITTSIZE = 4.000 YEAR LITTSIZE OFFSPRINGBODYMA- CUMULATIVEOFFBO- SS DYMASS N of Cases 23 23 23 23 Minimum 2,006.00 4 150.75 603 Maximum 2,012.00 4 287 1,148.00 Arithmetic Mean 2,008.65 4 216.133 864.53 Standard Error of Arithmetic Mean 0.37 0 6.28 25.121 Standard Deviation 1.774 0 30.119 120.477 Results for LITTSIZE = 5.000 YEAR LITTSIZE OFFSPRINGBODYMA- CUMULATIVEOFFBO- SS DYMASS N of Cases 36 36 36 36 Minimum 2,006.00 5 121.8 609 Maximum 2,012.00 5 259.2 1,296.00 Arithmetic Mean 2,009.03 5 183.019 915.097 Standard Error of Arithmetic Mean 0.339 0 4.503 22.517 Standard Deviation 2.035 0 27.021 135.104 Results for LITTSIZE = 6.000 YEAR LITTSIZE OFFSPRINGBODYMA- CUMULATIVEOFFBO- SS DYMASS N of Cases 44 44 44 44 Minimum 2,006.00 6 128 768 Maximum 2,012.00 6 224 1,344.00 Arithmetic Mean 2,009.07 6 173.896 1,043.38 Standard Error of Arithmetic Mean 0.293 0 3.562 21.37 Standard Deviation 1.946 0 23.625 141.752 Results for LITTSIZE = 7.000 YEAR LITTSIZE 4 CUMULATIVEOFFBO- SS DYMASS N of Cases 17 17 17 17 Minimum 2,006.00 7 129.1 903.7 Maximum 2,012.00 7 185 1,295.00 Arithmetic Mean 2,008.88 7 156.278 1,093.95 Standard Error of Arithmetic Mean 0.392 0 4.534 31.736 Standard Deviation 1.616 0 18.693 130.85 Results for LITTSIZE = 8.000 YEAR LITTSIZE OFFSPRINGBODYMA- CUMULATIVEOFFBO- SS DYMASS N of Cases 5 5 5 5 Minimum 2,007.00 8 132.8 1,062.40 Maximum 2,008.00 8 171.3 1,370.40 Arithmetic Mean 2,007.40 8 144.64 1,157.12 Standard Error of Arithmetic Mean 0.245 0 6.953 55.622 Standard Deviation 0.548 0 15.547 124.374 All body masses in GRAMS.

File name: Fig 17.7, WTPDs, Mean juvenile body mass vs litter size, 23 June 2026