Yesterday's Weather and Radiation Level

HKO READINGS & RADIATION LEVEL

YESTERDAY'S WEATHER AND RADIATION LEVEL:
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HONG KONG OBSERVATORY
MAXIMUM AIR TEMPERATURE                       30.8 C
MINIMUM AIR TEMPERATURE                       28.6 C
GRASS MINIMUM TEMPERATURE                     26.6 C
RELATIVE HUMIDITY                          71 - 79 PERCENT
RAINFALL                                       0.5 MM
TOTAL RAINFALL SINCE 1ST JANUARY             818.0 MM
AGAINST AN AVERAGE OF                       1089.3 MM

OTHER STATIONS                MIN                  MAX
KING'S PARK                  28.2 C               31.3 C
WONG CHUK HANG               26.7 C               30.1 C
TA KWU LING                  26.5 C               33.1 C
LAU FAU SHAN                 27.3 C               31.9 C
TAI PO                       26.2 C               31.3 C
SHA TIN                      28.4 C               31.3 C
TUEN MUN                     28.9 C               31.8 C
TSEUNG KWAN O                27.9 C               31.1 C
SAI KUNG                     28.4 C               31.7 C
CHEUNG CHAU                  26.8 C               31.5 C
CHEK LAP KOK                 28.5 C               32.9 C
TSING YI                     27.5 C               30.8 C
SHEK KONG                    27.1 C               32.6 C
TSUEN WAN                    26.3 C               30.2 C
HONG KONG PARK               26.1 C               31.1 C
SHAU KEI WAN                 27.2 C               30.5 C
KOWLOON CITY                 27.5 C               31.5 C
HAPPY VALLEY                 27.0 C               30.5 C
WONG TAI SIN                 28.5 C               32.4 C
STANLEY                      25.9 C               29.7 C

DURATION OF SUNSHINE (KING'S PARK):              2.5 H

THE MEAN UV INDEX RECORDED AT KING'S PARK YESTERDAY WAS 4,
THE UV INTENSITY WAS MODERATE.
THE MAXIMUM UV INDEX FOR YESTERDAY WAS 11.
SEA SURFACE TEMPERATURE (WAGLAN ISLAND):        26.2 C

YESTERDAY'S (3 JUL 2009) AVERAGE AMBIENT GAMMA RADIATION
DOSE RATE TAKEN OUTDOORS IN HONG KONG RANGED FROM 0.08 TO
0.14 MICROSIEVERT PER HOUR.  THESE ARE WITHIN THE NORMAL
RANGE OF FLUCTUATION OF THE BACKGROUND RADIATION LEVEL IN
HONG KONG. (SEE NOTE). THE AVERAGE DOSE RATES MEASURED AT
THE RADIATION MONITORING STATIONS OVER VARIOUS PARTS OF THE
TERRITORY WERE AS FOLLOWS :

STATION                     YESTERDAY'S AVERAGE
                            (MICROSIEVERTS/HOUR)
PING CHAU                           0.09
TAP MUN                             0.08
KAT O                               0.10
YUEN NG FAN                         0.12
TAI MEI TUK                         0.12
SHA TAU KOK                         0.09
KWUN TONG                           0.13
SAI WAN HO                          0.09
KING'S PARK                         0.14
TSIM BEI TSUI                       0.13

NOTE
1.     FROM READINGS TAKEN AT VARIOUS LOCATIONS IN HONG KONG DURING
       THE PERIOD 1987-2007, THE BACKGROUND AMBIENT GAMMA RADIATION
       LEVELS MAY VARY BETWEEN 0.06 AND 0.3 MICROSIEVERT PER HOUR.

2.     PROTECTIVE ACTION MAY BE REQUIRED IF THERE IS AN INCREASE IN
       THE AMBIENT GAMMA DOSE RATE ABOVE BACKGROUND SUCH THAT THE
       TOTAL ADDITIONAL DOSE IS EXPECTED TO EXCEED 5000
       MICROSIEVERTS.

3.     FOR EXAMPLE, IF AMBIENT GAMMA RADIATION IS THE ONLY FACTOR
       CONTRIBUTING TO THE RADIATION DOSE TO A PERSON, THIS DOSE
       OF 5000 MICROSIEVERTS MAY BE REACHED WHEN THE AMBIENT GAMMA
       DOSE RATE IS 1000 MICROSIEVERTS PER HOUR (MORE THAN 3000
       TIMES ABOVE BACKGROUND) AND LASTS FOR 5 HOURS; OR WHEN THE
       DOSE RATE IS 200 MICROSIEVERTS PER HOUR (MORE THAN 600
       TIMES ABOVE BACKGROUND) AND LASTS FOR 25 HOURS.