Dear Sir,


The following is the preliminary analysis for the station HKC.  Please note
that long period records include all 3 components but short period records
consist of the vertical component only.

DEC 1999

DEC 1
NIL 

DEC 2
NIL 

DEC 3
NIL 

DEC 4
NIL 

DEC 5
iP        Z'  220511      Compr.

DEC 6
iP        Z   232355.1    Compr.

DEC 7
iP    E'  Z   214146.7    Compr. to W

DEC 8
NIL 

DEC 9
NIL 

DEC10
iP        Z'  185833      Compr.

DEC11
iP    E'N'Z"  180537.6    Dilat. to SE
iS        Z"  180705.8   

DEC12
NIL 

DEC13
iP        Z   093544.9    Dilat.
iS    E'      093952   

DEC14
NIL 

DEC15
iP        Z'  044935      Compr.
iS      N'    045610   


'  Indicates long period records only
"  Indicates short period records only


Yours faithfully,


(Y.K. LEUNG)
for Director of the Hong Kong Observatory



Dear Sir,


The following is the preliminary analysis for the station HKC.  Please note
that long period records include all 3 components but short period records
consist of the vertical component only.

DEC 1999

DEC16
NIL 

DEC17
NIL 

DEC18
iP        Z"  035951.9    Dilat.
iS        Z"  040010.4   

iP        Z'  175150      Compr.
iS    E'      175718 

DEC19
NIL 

DEC20
NIL 

DEC21
iP        Z   142104.6    Compr.

DEC22
NIL 

DEC23
NIL 

DEC24
NIL 

DEC25
iP        Z"  224319.5    Compr.  

DEC26
NIL 

DEC27
NIL 

DEC28
iP    E'N'Z'  165643      Compr. to NW   
iS    E'N'    170101

DEC29
eP        Z'  133931      Dilat.
iS      N'    134759

iP    E'  Z'  230406      Compr. to W
iS      N'    231222

DEC30
NIL 

DEC31
NIL 


'  Indicates long period records only
"  Indicates short period records only


Yours faithfully,


(Y.K. LEUNG)
for Director of the Hong Kong Observatory