Retrieving specific SSID's Name, Quality and Signal Level using iwlist

I'm doing a project regarding RSSI and I have to retrieve the signal level of a particular WiFi SSID that I'm working on using the Linux command line. I've made use of the iwlist scanning command but I just couldn't get it to display the values that I want by using grep to print only the SSID name, quality and signal level. Commands that I've tried that didn't give me the results I wanted: 1. iwlist INTERFACE scanning essid SpecificESSID | grep Signal 2. iwlist INTERFACE scanning essid SpecificESSID | grep ESSID,Signal 3. iwlist INTERFACE scan | grep 'ESSID:"SpecificESSID"\|Signal level' - This almost worked but it displayed other networks' signal level as well and I only need one specific network information.