% yyyymmddhhmm     segJulA     IWV  
%    (GMT)          (GMT)     kg/m2 
 201312232130     441106200     48.4833
 201312232200     441108000     49.0062
 201312232230     441109800     49.0509
 201312232300     441111600     48.7634
 201312232330     441113400     49.8774