While calculating 𝑞 𝑡𝑒𝑡 we need to consider the four immediate neighbors of the central water-oxygen (Ow) as partners. Depending upon the protocol of calculation chosen and the concentration of reline in the system, the distance of the neighbors from Ow varies. local tetrahedral angle constituted by the water-oxygen. For Protocol-1 and 2 we see a flattening of the probability plot between 100° and 110° and a sharp rise followed by a sudden drop between 30° and 50° as the wt% of reline increases (from W-UC (2:1) to W-UC (8:4)). However, this sharp peak rather resembles a hump when the reline concentration is low. As the reline concentration increases the transformation of a hump to a sharp peak between 30° and 60° addresses a noticeable structural distortion of water from tetrahedrality, which is in agreement with an earlier study, where the addition of urea molecules to the aqueous solution invokes a disturbance in the microscopic structural network of water.