Report BPD Pontianak Observation number 40

Radiosonde Observation log

Station	Pontianak (LAPAN Observatory)
Position	0.00 0 S,109.370 E
Altitude	1m MSL

Date (YYYY/MM/DD				2011 /12 /20
Observation Members				Suhendi, Rudianyanto,Ramli
Observation Number				40
Observation Time				00 (UTC)
Radiosonde Number Radiosonde Frequency				G0553774 404.50 MHz
Ground Check			Reference	P(hPa): 1005,8	T(0C) : 22,8	RH (%): 0
			Difference	P (hPa):-0,1	T(0C) : -0,3	RH (%): 0
Sonde Release Time				06.30 LST
Observation End Time				07:43:30 LST
Flight Direction (16 direction)				South West
Maximum Elevation				20867 (km)
Archive File Name				111220 / 111220.001
Weather Condition				Cloudy
Cloud Amount				5/8   Octus
Surface	Pressure			1005,8    (hPa)
	Temperature			24,3         (0C)
	Relative Humidity			100      (%)
	Surface Wind Direction			63  (deg)
	Suferface Wind Speed			0,3   (m/s)
Comments		Observation success