I was looking for some element's half-life, on the following website:
http://nucleardata.nuclear.lu.se/toi/listnuc.asp?sql=&A1=214&A2=214&Z=88
For 214,88-Ra, the half-life is shown to be: 2.46 s 3
I am unsure what the "3" stands for, is it "$\cdot 10^{-3}$"?
Thank you for your help and time guys.