SEA LEVEL STATION MONITORING FACILITY
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Station metadata
Code sema
Country Indonesia
Location Semarang
Status Operational
Status description Re-Installation, same location, but elevated
Added to the system 2012-05-09 12:55:32
Local Contact Geospacial Agency of Indonesia ( Indonesia )
Other Contact GeoForschungsZentrum ( Germany )
Long-term MSL data
Latitude -6.9479
Longitude 110.42012
Connection GTS message
GTS message type SZID53
OT12 code ID-SEMA-12
Transmit interval (min) 15
Transmit lag UTC (sec) 120
Ave. transmit delay (min) 3
Messages received (24h) 86
Messages expected (24h) 96
Sensor 1
Type of sensorprs (pressure)
Sampling rate (min)1
    GTS format
Units of measurem
First value11
Samples30
Reversed orderno
    Performance statistics
Last data measured at2024-11-23 14:02:00
Last data received at2024-11-23 14:06:03
Measurements received in 24h1425
Measurements expected1440
Performance ratio99%
Sensor 2
Type of sensorpr2 (2nd pressure)
Sampling rate (min)1
    GTS format
Units of measurem
First value43
Samples30
Reversed orderno
    Performance statistics
Last data measured at2024-11-23 14:02:00
Last data received at2024-11-23 14:06:03
Measurements received in 24h1391
Measurements expected1440
Performance ratio97%
Sensor 3
Type of sensorrad (radar)
Sampling rate (min)1
    GTS format
Units of measurem
First value75
Samples30
Reversed orderno
    Performance statistics
Last data measured at2024-11-23 14:02:00
Last data received at2024-11-23 14:06:03
Measurements received in 24h1414
Measurements expected1440
Performance ratio98%
Sensor 4
Type of sensorbat (battery)
Sampling rate (min)15
    GTS format
Units of measureV
First value106
Samples1
Reversed orderno
    Performance statistics
Last data measured at2024-11-23 14:02:00
Last data received at2024-11-23 14:06:03
Measurements received in 24h85
Measurements expected96
Performance ratio89%
Period SignalsData

12h
day
7 days
30 days
 prs (pressure)
pr2 (2nd pressure)
rad (radar)
Remove outliers
Remove spikes 		Relative levels = signal - median over selected period
Absolute levels = as received
Offset signals = relative levels + offset
Show battery voltage
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