exp

t = -0.7975, df = 392.627, p-value = 0.4257
 -0.6369035  0.2693129 
 16.25577  16.43956 

t = -2.0701, df = 1750.779, p-value = 0.03859
 -0.39904862 -0.01076557 
 16.25577  16.46067 

t = -4.9262, df = 2594.13, p-value = 8.912e-07
 -0.5345193 -0.2301443 
 16.25577  16.63810 

t = -1.1213, df = 8112.614, p-value = 0.2622
 -0.16756678  0.04561857 
 16.25577  16.31674
 
t = -0.5997, df = 13624.48, p-value = 0.5487
 -0.11457161  0.06089016 
 16.25577  16.28261 

t = 1.5893, df = 7538.337, p-value = 0.1120
 -0.02086837  0.19965246 
 16.25577  16.16637 

t = -0.7643, df = 9116.638, p-value = 0.4447
 -0.14445878  0.06340704 
 16.25577  16.29629 

t = -0.0332, df = 7811.523, p-value = 0.9735
 -0.1469380  0.1420432 
 16.25577  16.25821 

t = 3.813, df = 13555.20, p-value = 0.0001379

 0.08670717 0.27016347 
 16.25577  16.07733