CREATE TABLE table_31439 ("model" TEXT, "Sonnet" TEXT, "Apple" TEXT, "NUpowr 117" TEXT, "NUpowr 167" TEXT, "NUpowr 183" TEXT, "NUpowr G3" TEXT)

When maker is the model what is the nupowr 167?
SELECT "NUpowr 167" FROM table_31439 WHERE "model" = 'Maker'
SELECT "NUpowr 167" FROM "table_31439" WHERE "model" = 'Maker'