VOS-Clim ship suspect list for January 2007
   *************************************************
	   
 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
------------------------------------------------------------

 PDHO        Press      48     0     0.9    -2.7     2.9
 VTXK        Press      68     0     1.5     6.5     6.7

 VCLM        Speed      35    11     4.8     4.1     6.3
 VTXK        Speed      63     0     3.0     7.4     8.0
 ZDLP        Speed      50    14     2.4     0.5     2.5


 CGJK        Temp      233     0     1.5     4.1     4.3
 PDZS        Temp       63     0     2.2     2.3     3.2

 CGJK        RelHu     233     0     8.8   -10.7    13.8
 C6SS3       RelHu      45     0     5.6    12.5    13.7
 ELXT8       RelHu      28     0    14.0    20.0    24.4
 IBPW        RelHu      25     0     7.5    17.1    18.6
 PDZS        RelHu      62     0    12.6   -13.0    18.1
 VOCJ        RelHu     221     0     8.2   -10.5    13.3
 VTXG        RelHu      27     0     9.8    10.0    14.0
 ZCBN5       RelHu      25     0     6.1    10.4    12.0

 DQVN        SST        65     0     0.6     2.1     2.2
 VOCJ        SST        39     0     2.4     3.3     4.1