Data Acquisition Efficiency How to Calculate ?
Number of days in 1 year = 365
A Number of days buoy/sensor is in position and working.	B Number of days buoy is drifting or not working.	C Number of days buoy is not deployed.
% Buoy Working in Position	=	[ A / ( A + B ) ] * 100
% Buoy in Position	=	[ ( A + B ) / 365 ] * 100
% Data in 1 Year	=	[ A / 365 ] * 100

% Buoy Working in Position
1 9 9 2 - 1 9 9 9
Position	%
Sichang Island	85.9
Rayong	89.3
Chang Island	82.0
Platong	100.0
Tao Island	75.2
Songkhla	71.8
Petchburi	96.9
Nakornsritammaraj	48.3
Rawi Island	55.0
Phuket Island	85.8
Average	84.0

% Sensor Efficiency
Parameter	% Sensor Working [ A / ( A + B ) ] * 100	% Data in 1 Year [ A / 365 ] * 100
Wind Speed	64.5	44.8
Wind Direction	72.9	50.6
Air Temperature	73.5	51.0
Air Pressure	76.3	52.9
Wave	78.6	54.0
Current	66.8	46.3
Light Attenuation	40.4	27.0
Dissolved Oxygen	54.6	36.5
Water Temp 3.5 m.	74.4	46.7
Water Temp 5 m.	58.8	17.9
Water Temp 10 m.	54.6	16.6
Water Temp 15 m.	32.9	1.8
Water Temp 20 m.	56.4	13.9
Salinity 5 m.	43.9	13.3
Salinity 10 m.	44.6	13.6
Salinity 15 m.	22.5	1.2
Salinity 20 m.	42.1	10.4

Buoy Deployment/Maintenance
Position	1991-1992	1993	1994	1995	1996	1997	1998	1999	2000	Total
Sichang Island	7	7	4	1	4	5	3	4	1	36
Rayong	6	5	4	0	4	4	3	5	2	33
Chang Island	3	6	5	1	1	4	3	3	3	29
Platong	1	4	3	1	-	-	-	-	-	9
Tao Island	-	5	4	1	-	2	1	3	0	16
Songkhla	-	3	4	1	-	2	1	2	-	13
Huahin	-	5	5	1	4	4	3	3	3	28
Petchaburi	-	-	-	-	3	4	3	2	2	14
Nakorn	-	-	-	-	-	2	1	-	-	3
Rawi Island	-	-	-	-	2	4	0	1	2	9
Phuket Island	-	-	-	-	1	4	0	2	2	9
Total	17	35	29	6	19	35	18	25	15	199
Note :	- 0	no deployment plan no buoy deployed

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