The guitar strings 6(E) and 4(D) are left open. This chord is played start on fret 1 Dominant seventh (normal seventh) chord with added 13th (6th). Most of the time the 5th is left out (3rd note). The 13th = 6th 13th is used when the chord is a 7th chord with added 6th 6th chords are not 7th chords with added 6th.
Scale E: E F#m Abm A B C#m Ebdim
Note: E, B, D, G#, C#, F#
Step: 1-3-(5)-b7-9-131(E), 3(G#/Ab), 5(B), b7(D), 9(F#/Gb), 13(C#/Db)