Complex sentence: The table shows that in small reactors the amount of damage is very small compared to the power plant reactors and that in new types of reactor under investigation, the number of damage increases in a number of categories.
Split into simpler sentences: The table shows that in small reactors the amount of damage is very small compared to the power plant reactors. Additionally, with the new types of reactors under investigation, the number of damage increases in a number of categories.