Abstract: Electrostatic analyzers flown on sounding rocket missions measure 2D ion distribution functions, providing observations of temperature enhancements, bulk velocity moments, anisotropy and conics. The observations of these parameters are coupled to observations made by other sensors and a deconvolution process is required. We create an ion database of parameters over the duration of this flight by finding the Maxwellian modeled distributions that best fit the data from our detectors. This process involves feeding the model with known measured parameters from other sensors, including electric field, density and plasma potential measurements, and scanning through values of the coupled variables to find the permutation with the smallest difference between the generated Maxwellian distribution and the flight data. The output of this optimization procedure will create a database comprised of the ion temperature ($T_{\perp}$,$T_{||}$), anisotropy and parallel flow. The Rocket Experiment for Neutral Upwelling 2 campaign was designed to transit the cusp region between 200 and 600 km and study particle processes during a neutral upwelling event. This project aims to investigate the connection between ion upflows and outflows, and neutral upwelling from the topside ionosphere. The measurements derived from this minimization process  will be used as input for coupled ionospheric models or be used as a metric to compare to what the models predict.