1.   So far a portion of the upper wing has been recovered and strong metal detector readings indicate that other parts of the airframe are buried nearby.

2.   A reading above zero indicates confidence in the economy.

3.   A negative reading indicates a slowdown, because the index is calculated by subtracting the percentage of respondents reporting less business from the percentage reporting more.

4.   The low-level wind-shear alert system warns controllers, who can tell pilots, when contradictory readings on the ground indicate that a wind shear may be present.

5.   A negative reading indicates an economic contraction.

6.   And while the NAPM said the February reading indicated a second contraction in as many months, the upturn may indicate the decline has reached its low point.

7.   If pressure readings indicate pipeline damage, investigators will try to determine if it existed before the explosion or was caused by it.

8.   The Cyprus Seismological Center said preliminary readings indicated there were two earthquakes Wednesday morning.

9.   Higher readings indicate possible cancer, which a biopsy then confirms or rules out.

10.   A high reading would indicate that the heart was malfunctioning and blood was backing up in the right chamber of the organ.