no measurements of dioxins in fly ash from danish power plants exist, and due to the lack of up-to-date measurements, the mass-flow analysis estimates, however with great uncertainty, that the total content of dioxins in the fly ash is 0.3-40 g i-teq/year.

How would the previous sentence be correctly capitalized?
No measurements of dioxins in fly ash from Danish power plants exist, and due to the lack of up-to-date measurements, the mass-flow analysis estimates, however with great uncertainty, that the total content of dioxins in the fly ash is 0.3-40 g I-TEQ/year.