| Date | Operational? | Description/reason | Last updated by |
|---|---|---|---|
| Dec. 8, 2022, 2:45 p.m. | Yes | Operational since Nov15, 2022 after new laser setup, sun-tracker mirrors replacement, protective glass cover removal from sun-tracker | k_shiomi |
| Dec. 8, 2022, 2:11 p.m. | Yes | k_shiomi | |
| Oct. 21, 2022, 1:16 a.m. | No | Laser has not worked since 07UTC Oct14, 2022. It will be replaced on Nov14. | k_shiomi |
| March 30, 2021, 10:57 a.m. | Yes | Operational, the barometer was renewed on Mar29, 2021 | k_shiomi |
| March 20, 2021, 2:18 p.m. | Yes | Operational, but not operational on Mar29-30 due to the Meteorological station maintenance work | k_shiomi |
| March 12, 2021, 3:22 a.m. | Yes | Operational, but not operational on Mar18-19 due to the FTS maintenance work | k_shiomi |
| Feb. 10, 2021, 5:21 a.m. | Yes | Operational | k_shiomi |
| Jan. 14, 2021, 6:57 a.m. | Yes | Operational, but not operational on Feb06-07, 2021 due to scheduled power outage | k_shiomi |
| April 24, 2020, midnight | Yes | Normal operation from March 20, 2020 | k_shiomi |
| March 12, 2020, midnight | No | A new laser was installed on March 5. But, the solar tracker does not work because of a new GPS install failure. It will be fixed by the end of March. | k_shiomi |
| Jan. 15, 2017, midnight | Yes | The vacuum pump was repaired on January 5, 2016. (1 atm operation from 20150920 to 20160105) | k_shiomi |
| Sept. 20, 2016, midnight | Yes | The vacuum pump stopped. We will continue measurements at 1 atm (internal pressure of the FTS) for the time being. | kawakami |
| Aug. 5, 2016, midnight | Yes | The sliding roof has been repaired. Appear back to normal on Aug. 6 | kawakami |
| June 29, 2016, midnight | No | The sliding roof of the solar tracker is malfunctioned since June 18, 2016. | kawakami |
| Dec. 14, 2015, midnight | Yes | A new laser was installed on Dec 14. | kawakami |
| Nov. 19, 2015, midnight | No | Reported a laser sampling problem since beginning of Nov. | coleen |
| June 10, 2015, midnight | Yes | The sliding roof was repaired on May 19.(No data from March 2 to May 18, 2015) | kawakami |
| March 4, 2015, midnight | No | The sliding roof of the solar tracker is broken (March 2~). | kawakami |
| July 18, 2013, midnight | Yes | A laser board(ECL04) was installed on July 27, 2011. The laser was exchanged on January 12, 2013. | kawakami |
| June 8, 2011, midnight | Yes | some maintenances will be anticipated | kawakami |
| June 8, 2011, midnight | Yes | kawakami | |
| Dec. 23, 2010, midnight | No | To be operational sometime in 2011. No earlier than May. The instrument is currently in Tsukuba. | kawakami |
| Dec. 22, 2010, midnight | No | To be operational sometime in 2011. The instrument is currently in Tsukuba. | dwunch |