whale   mom  fetus
n99B7   15.4   4.0 
n99B6   12.6  13.0 
fed4398 13.0  13.4 
fed4392 16.0  23.5 
t86ww2  17.7  27.3 
t78ww1  16.3  37.5 
t96b5   15.2  58.5 
t92b7   14.2  75.0 
t92b8   15.7  84.0  
t92kk1  15.2 113.0 
t83kk1  14.7 115.0 
t76b5   17.3 128.0 
t92b13  15.0 145.0 
t88kk1  14.9 150.0 
t87n1   15.2 160.0 
t96b11  14.3 160.0 
t93b20  15.5 163.0 
t90g4   15.2 366.0 
t90b4   14.9 390.0 
n99B18  13.0 399.0   
t89b2   14.7 401.0 
t87b5   15.7 405.0 
t95b8   15.2 410.0