I'm doing a research project for school on air pollution and part of it is studying pollution caused by aviation and I have found a table of data for the emission indices of various pollutants but I'm not 100% certain, if I'm correctly reading the numbers.
The unit is $\mathrm{g\, kg^{-1}~of~fuel}$ and the numbers are like 1.64E-02 or 2.25E+00. I'm interpreting it as E being for Exa, so in short scale 1.64E would be 1.64 quintillion and that it means 1.64 quintillion particles per g per kg of fuel. Is that the correct meaning? I have no idea what the second bit of the numbers means so please could you explain for me?