SEA LEVEL STATION MONITORING FACILITY
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Station metadata
Code maka
Country Hawaii; U.S.A.
Location Makai Pier, Waimanalo, Hawaii
Status In test
Status description UHSLC test site for wavey conditions
Added to the system 2013-10-08 22:01:05
Local Contact University of Hawaii Sea Level Center ( USA )
Long-term MSL data
Latitude 21.32
Longitude -157.669
Connection GTS message
GTS message type SZXX01
GTS station code US-HI-MAKAI
Transmit interval (min) 5
Transmit lag UTC (sec) 0
Ave. transmit delay (min) 8
Messages received (24h) 215
Messages expected (24h) 288
Sensor 1
Type of sensorprs (pressure)
Sampling rate (min)1
    GTS format
Units of measurem
First value4
Samples5
Reversed orderyes
    Performance statistics
Last data measured at2025-12-14 01:28:00
Last data received at2025-12-14 01:35:22
Measurements received in 24h375
Measurements expected1440
Performance ratio26%
Sensor 2
Type of sensorrad (radar)
Sampling rate (min)1
    GTS format
Units of measurem
First value4
Samples5
Reversed orderyes
    Performance statistics
Last data measured at2025-12-14 01:29:00
Last data received at2025-12-14 01:35:22
Measurements received in 24h375
Measurements expected1440
Performance ratio26%
Sensor 3
Type of sensorra2 (2nd radar)
Sampling rate (min)1
    GTS format
Units of measurem
First value4
Samples5
Reversed orderyes
    Performance statistics
Last data measured at2023-09-12 20:01:00
Last data received at2023-09-12 20:04:03
Measurements received in 24h0
Measurements expected1440
Performance ratio0%
Sensor 4
Type of sensorra3 (3rd radar)
Sampling rate (min)1
    GTS format
Units of measurem
First value4
Samples5
Reversed orderyes
    Performance statistics
Last data measured at2023-07-25 22:01:00
Last data received at2023-07-25 22:06:01
Measurements received in 24h0
Measurements expected1440
Performance ratio0%
Sensor 5
Type of sensorsw1 (1st switch)
Sampling rate (min)60
    GTS format
Units of measuremin
First value4
Samples1
Reversed orderno
    Performance statistics
Last data measured at2023-09-12 20:01:00
Last data received at2023-09-12 20:04:03
Measurements received in 24h0
Measurements expected24
Performance ratio0%
Sensor 6
Type of sensorbat (battery)
Sampling rate (min)5
    GTS format
Units of measureV
First value4
Samples1
Reversed orderno
    Performance statistics
Last data measured at2025-12-14 01:26:00
Last data received at2025-12-14 01:35:22
Measurements received in 24h75
Measurements expected288
Performance ratio26%
Sensor 7
Type of sensorwls (water level sensor)
Sampling rate (min)1
    GTS format
Units of measurem
First value4
Samples5
Reversed orderyes
    Performance statistics
Last data measured at2023-09-12 20:01:00
Last data received at2023-09-12 20:04:03
Measurements received in 24h0
Measurements expected1440
Performance ratio0%
Sensor 8
Type of sensorflt (float)
Sampling rate (min)1
    GTS format
Units of measurem
First value4
Samples
Reversed orderyes
    Performance statistics
Last data measured at2020-06-04 18:21:00
Last data received at2020-06-04 18:26:05
Measurements received in 24h0
Measurements expected1440
Performance ratio0%
Sensor 9
Type of sensoraqu (Aquatrak (brand))
Sampling rate (min)1
    GTS format
Units of measurem
First value4
Samples5
Reversed orderyes
    Performance statistics
Last data measured at2023-09-12 20:01:00
Last data received at2023-09-12 20:04:03
Measurements received in 24h0
Measurements expected1440
Performance ratio0%
Sensor 10
Type of sensorbub (bubbler)
Sampling rate (min)1
    GTS format
Units of measurem
First value4
Samples5
Reversed orderyes
    Performance statistics
Last data measured at2023-09-12 20:01:00
Last data received at2023-09-12 20:04:03
Measurements received in 24h0
Measurements expected1440
Performance ratio0%
Period SignalsData

12h
day
7 days
30 days
 prs (pressure)
rad (radar)
ra2 (2nd radar)
ra3 (3rd radar)
wls (water level sensor)
flt (float)
aqu (Aquatrak (brand))
bub (bubbler)
Remove outliers
Remove spikes 		Relative levels = signal - median over selected period
Absolute levels = as received
Offset signals = relative levels + offset
Show switch data
Show battery voltage
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