graduated table

NOUN
15 LETTERS · STARTS WITH G

graduated table is a valid 15-letter word worth 19 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
G2R1A1D2U1A1T1E1D2T1A1B3L1E1
2 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 3 + 1 + 1 =19 PTS
DOUBLE WORD → 38TRIPLE WORD → 57
MEANING

What does graduated table mean?