VOS-Clim ship suspect list for April 2005
   *********************************************
	   
 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 criteria 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    |  50     |  10.0  |


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

 CG2960      Press     250     0     3.0     4.1     5.1
 ZCBP5       Press      21     0     1.6     3.8     4.2

 VQBW2       Direc      32     0    61.3     4.0    61.4

 CGDS        Temp      260     0     2.6     2.2     3.4
 CGTF        Temp       43     0     2.6     2.0     3.3
 CG2350      Temp      197     0     3.1     2.2     3.8

 CGDS        RelHu     260     0    14.5   -12.2    19.0
 CG2350      RelHu     197     0    14.0   -10.3    17.3

 CGDS        SST       131     2     3.1     3.7     4.9
 CG2350      SST       149     3     3.4     5.0     6.1
 DQVL        SST        23     0     1.0     2.2     2.4
 WRYC        SST        43     0     0.7    -2.1     2.2