4.02/year\text{4.02/year}4.02/year
1.609×10−4/ year1.609\times 10^{-4}/\text{ year}1.609×10−4/ year
4.02×104/ year4.02\times 10^4/\text{ year}4.02×104/ year
4.02×10−4/ year4.02\times 10^{-4}/\text{ year}4.02×10−4/ year
