11 1 SIGMA-0 MEASUREMENT IS NOT USABLE 22 2 SIGNAL TO NOISE RATIO IS LOW 33 3 SIGMA-0 IS NEGATIVE 44 4 SIGMA-0 IS OUTSIDE OF ACCEPTABLE RANGE 55 5 SCATTEROMETER PULSE QUALITY IS NOT ACCEPTABLE 66 6 SIGMA-0 CELL LOCATION ALGORITHM DOES NOT CONVERGE 77 7 FREQUENCY SHIFT LIES BEYOND THE RANGE OF THE X FACTOR TABLE 88 8 SPACECRAFT TEMPERATURE IS BEYOND CALIBRATION COEFFICIENT RAN" GE 99 9 NO APPLICABLE ALTITUDE RECORDS WERE FOUND FOR THIS SIGMA-0 1010 10 INTERPOLATED EPHEMERIS DATA ARE NOT ACCEPTABLE FOR THIS SIGM" A-0 11