#Credit: https://stuifbergen.com/2018/02/google-analytics-api-built-in-segments-the-complete-list/ #Segment list. gaid::-1 -> All Users, gaid::-5 -> Organic traffic, etc
ID -1 : All Users
ID -2 : New Users
ID -3 : Returning Users
ID -4 : Paid Traffic
ID -5 : Organic Traffic
ID -6 : Search Traffic
ID -7 : Direct Traffic
ID -8 : Referral Traffic
ID -9 : Sessions with Conversions
ID -10 : Sessions with Transactions
ID -11 : Mobile and Tablet Traffic
ID -12 : Non-bounce Sessions
ID -13 : Tablet Traffic
ID -14 : Mobile Traffic
ID -15 : Tablet and Desktop Traffic
ID -16 : Android Traffic
ID -17 : iOS Traffic
ID -18 : Other Traffic (Neither iOS nor Android)
ID -19 : Bounced Sessions
ID -100 : Single Session Users
ID -101 : Multi-session Users
ID -102 : Converters
ID -103 : Non-Converters
ID -104 : Made a Purchase
ID -105 : Performed Site Search