This episode's headline: Reading the Numbers; Up & Down on the Farm; Politics at the Pump; Political Wrap; Dialogue. ANCHOR: JIM LEHRER; GUESTS: ALLEN SINAI, Lehman Brothers; SANDRA SHABER, WEFA Group; BARBARA GROGAN. Western Industrial Contractors, Inc.; BARBARA RACKES, Rackes Direct; MARK SHIELDS, Syndicated Columnist; PAUL GIGOT, Wall Street Journal; DAVID POPENOE, Author; CORRESPONDENTS: MARGARET WARNER; TOM BEARDEN; KWAME HOLMAN; DAVID GERGEN;