Ping-Pong prowess

Caption: "Playground officials estimate that hot summer days find school play basements at least 10 degrees cooler than outside. Edward Stranz, 14, of 339 17th St., makes the most of the relative comfort, at the left, as four of his chums watch his Ping-Pong prowess being put to the test." PS 10 is located at 511 7th Avenue.