"Different baselines" refers to starting points or references that are not the same.
Sentences with «different baselines»
Scientists from NOAA, WHO, and the UK Met Office use much of the same raw temperature data, but with different baseline periods or slightly different methods to analyze Earth's polar regions and global temperatures. (earthobservatory.nasa.gov)
Each agency uses different methods of processing the global temperature data, as well as different baselines for comparing temperatures, leading to slightly different results. (scientificamerican.com)
This is because these devices behave differently in their scrolling acceleration / final velocity, and set different baseline speeds for many actions and transitions (even at the same 1x setting). (xda-developers.com)