Refer to the table shown.
Sources: L. P. Folkow and A. S. Blix. 1999. Polar Biol. 22: 61-74; L. P. Folkow et al. 2010. Polar Biol. 33: 433-441.
^a More than 170,000 dives were recorded using satellite-linked dive recorders.
^b Outliers that represented < 0.1% of the data set are omitted.
According to the table, which adult measurement has changed the least from the weanling measurement?