VOS-Clim ship suspect list for March 2004
   *************************************************
	   
 Monitoring centre:  Met Office, UK.

 All VOS-Clim ship data is monitored: against background 6-hour forecast fields
 for all variables except SST, for which analysed fields from the previous day 
 are used.

 Key to table below
 ------------------
 NumObs : number of observations from the ship during the month
 %GE    : percentage of obs with gross errors (for GE limits see below)
 StdDvn : standard deviation of obs-background, excluding obs with gross errors
 Bias   : mean obs-background, excluding obs with gross errors
 RMS    : root mean square of obs-background, excluding obs with gross errors

 Suspect selection citeria for each variable:
    At least 20 observations from the ship and one or more of the following:-
    %GE      >  10%
    |Bias|   >  Bias limit (see below)
    StdDvn   >  StdDvn limit (see below)
 
 Limits:       | Press.| Wind Speed | Direct.| Air Temp.| Rel.Hum.|  SST   |
 -------       | (hPa) |   (m/s)    | (deg)  | (deg C)  |  (%)    | (deg C)|
 Bias limit    |  2.5  |     5      |   30   |   2.0    |  10     |   2.0  |
 StdDvn limit  |  5.0  |    10      |   60   |   4.0    |  20     |   4.0  | 
 GE limit      | 15.0  |    25      |  150   |  10.0    |  40     |  10.0  |


Callsign   Element   NumObs   %GE   StdDvn   Bias    RMS
------------------------------------------------------------

 GXUP        Press      46     0     1.4     2.6     2.9
 VTXK        Press      38     0     2.6     4.9     5.5

 V2FM        Direc      20     0    73.3    -6.0    73.5

 CGDX        Temp       74     0     3.0     2.7     4.0
 CGSB        Temp      212     0     2.6     2.2     3.4
 CG2958      Temp       38     0     2.6     2.7     3.7

 CGDX        RelHu      74     0    16.5   -12.9    21.0
 CGSB        RelHu     212     0    14.0   -15.7    21.0
 CG2958      RelHu      38     0    12.3   -14.0    18.6

 CG2960      SST       129     2     4.7    -2.3     5.3
 VOCJ        SST       213    50     2.2     4.7     5.2