Looking at Table 4.9, I see:
(1) over 24 in., CJP & PJP (butt-groove), 1G Rotated & 2G... to this add vertical
(2) over 24 in., PJP (T,Y,K-groove) consider note 5, 1G Rotated & 2G... to this add vertical
(3) Any size, FILLET, 1F & 2F Rotated & 2F... to this add vertical
Also see Table 4.10 and notes. If the test coupon was 1", then the thickness is 1/8" to unlimited. If less than 1", then limited to 1/8" to 2T.