Data collected by the department should be presented neutrally, without adjustments intended to support any one side in the climate debate.

Using recent history as context for my interpretation of this, I believe what they actually mean is “…should definitely not be presented neutrally, because doing so would rely only on the peer reviewed science which overwhelmingly agrees that climate change is definitely a real thing that is currently happening. Instead, DO adjust it to make it seem like it’s impossible to say for sure.”