Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 4 · column 2 of 9 · from the scan, no model involved

and phase. Even for pasture, it rates only 35 on a scale that goes to 100.
One cannot speak of “phase” without referring to slope. What is slope?
“Slope” is defined as being inclined from the level or the verticle; slanting. “Verticle” is perpendicular to the plane of the horizon; upright; extending up and down.
Thus a 90 degree angle is verticle, not sloping at all; a 100 percent drop, if you please.
A 100 percent slope is a 45 degree angle. Picture yourself traveling along the hypotenuse of a right triangle. The hypotenuse is a 45 degree angle to the horizontal plane. In moving along the line, you advance one foot to every one foot you climb. So: 100 percent slope.
I must agree with David
91.2%