CSV files of mains frequency

Data is split into separate files, each containing data from 30 days.

Pre-computed values

Raw values have been pre-computed to one value per minute using the average value of the raw measurements. This allows proper aggregation of multiple minute-based values, assuming all value timings are strictly spread within this minute.

Drop values

Raw values have been pre-computed to show the highest recorded frequency drop (in Hz) around the full-hour marks. This is the delta between the highest and lowest mains frequency in a window of plus/minus 10 minutes around the full-hours marks.

Raw values

No pre-computing has been done. Files contain the raw measurements on a 5-second time base (10 seconds as of 2023).

Files

2015-08-18 to 2015-09-17One value per minuteHourly dropsRaw values (Interval incomplete)
2015-09-17 to 2015-10-17One value per minuteHourly dropsRaw values
2015-10-17 to 2015-11-16One value per minuteHourly dropsRaw values
2015-11-16 to 2015-12-16One value per minuteHourly dropsRaw values
2015-12-16 to 2016-01-15One value per minuteHourly dropsRaw values
2016-01-15 to 2016-02-14One value per minuteHourly dropsRaw values
2016-02-14 to 2016-03-15One value per minuteHourly dropsRaw values
2016-03-15 to 2016-04-14One value per minuteHourly dropsRaw values
2016-04-14 to 2016-05-14One value per minuteHourly dropsRaw values
2016-05-14 to 2016-06-13One value per minuteHourly dropsRaw values
2016-06-13 to 2016-07-13One value per minuteHourly dropsRaw values
2016-07-13 to 2016-08-12One value per minuteHourly dropsRaw values
2016-08-12 to 2016-09-11One value per minuteHourly dropsRaw values
2016-09-11 to 2016-10-11One value per minuteHourly dropsRaw values
2016-10-11 to 2016-11-10One value per minuteHourly dropsRaw values
2016-11-10 to 2016-12-10One value per minuteHourly dropsRaw values
2016-12-10 to 2017-01-09One value per minuteHourly dropsRaw values
2017-01-09 to 2017-02-08One value per minuteHourly dropsRaw values
2017-02-08 to 2017-03-10One value per minuteHourly dropsRaw values
2017-03-10 to 2017-04-09One value per minuteHourly dropsRaw values
2017-04-09 to 2017-05-09One value per minuteHourly dropsRaw values
2017-05-09 to 2017-06-08One value per minuteHourly dropsRaw values
2017-06-08 to 2017-07-08One value per minuteHourly dropsRaw values
2017-07-08 to 2017-08-07One value per minuteHourly dropsRaw values
2017-08-07 to 2017-09-06One value per minuteHourly dropsRaw values
2017-09-06 to 2017-10-06One value per minuteHourly dropsRaw values
2017-10-06 to 2017-11-05One value per minuteHourly dropsRaw values
2017-11-05 to 2017-12-05One value per minuteHourly dropsRaw values
2017-12-05 to 2018-01-04One value per minuteHourly dropsRaw values
2018-01-04 to 2018-02-03One value per minuteHourly dropsRaw values
2018-02-03 to 2018-03-05One value per minuteHourly dropsRaw values
2018-03-05 to 2018-04-04One value per minuteHourly dropsRaw values
2018-04-04 to 2018-05-04One value per minuteHourly dropsRaw values
2018-05-04 to 2018-06-03One value per minuteHourly dropsRaw values
2018-06-03 to 2018-07-03One value per minuteHourly dropsRaw values
2018-07-03 to 2018-08-02One value per minuteHourly dropsRaw values
2018-08-02 to 2018-09-01One value per minuteHourly dropsRaw values
2018-09-01 to 2018-10-01One value per minuteHourly dropsRaw values
2018-10-01 to 2018-10-31One value per minuteHourly dropsRaw values
2018-10-31 to 2018-11-30One value per minuteHourly dropsRaw values
2018-11-30 to 2018-12-30One value per minuteHourly dropsRaw values
2018-12-30 to 2019-01-29One value per minuteHourly dropsRaw values
2019-01-29 to 2019-02-28One value per minuteHourly dropsRaw values
2019-02-28 to 2019-03-30One value per minuteHourly dropsRaw values
2019-03-30 to 2019-04-29One value per minuteHourly dropsRaw values
2019-04-29 to 2019-05-29One value per minuteHourly dropsRaw values
2019-05-29 to 2019-06-28One value per minuteHourly dropsRaw values
2019-06-28 to 2019-07-28One value per minuteHourly dropsRaw values
2019-07-28 to 2019-08-27One value per minuteHourly dropsRaw values
2019-08-27 to 2019-09-26One value per minuteHourly dropsRaw values
2019-09-26 to 2019-10-26One value per minuteHourly dropsRaw values
2019-10-26 to 2019-11-25One value per minuteHourly dropsRaw values
2019-11-25 to 2019-12-25One value per minuteHourly dropsRaw values
2019-12-25 to 2020-01-24One value per minuteHourly dropsRaw values
2020-01-24 to 2020-02-23One value per minuteHourly dropsRaw values
2020-02-23 to 2020-03-24One value per minuteHourly dropsRaw values
2020-03-24 to 2020-04-23One value per minuteHourly dropsRaw values
2020-04-23 to 2020-05-23One value per minuteHourly dropsRaw values
2020-05-23 to 2020-06-22One value per minuteHourly dropsRaw values
2020-06-22 to 2020-07-22One value per minuteHourly dropsRaw values
2020-07-22 to 2020-08-21One value per minuteHourly dropsRaw values
2020-08-21 to 2020-09-20One value per minuteHourly dropsRaw values
2020-09-20 to 2020-10-20One value per minuteHourly dropsRaw values
2020-10-20 to 2020-11-19One value per minuteHourly dropsRaw values
2020-11-19 to 2020-12-19One value per minuteHourly dropsRaw values
2020-12-19 to 2021-01-18One value per minuteHourly dropsRaw values
2021-01-18 to 2021-02-17One value per minuteHourly dropsRaw values
2021-02-17 to 2021-03-19One value per minuteHourly dropsRaw values
2021-03-19 to 2021-04-18One value per minuteHourly dropsRaw values
2021-04-18 to 2021-05-18One value per minuteHourly dropsRaw values
2021-05-18 to 2021-06-17One value per minuteHourly dropsRaw values
2021-06-17 to 2021-07-17One value per minuteHourly dropsRaw values
2021-07-17 to 2021-08-16One value per minuteHourly dropsRaw values
2021-08-16 to 2021-09-15One value per minuteHourly dropsRaw values
2021-09-15 to 2021-10-15One value per minuteHourly dropsRaw values
2021-10-15 to 2021-11-14One value per minuteHourly dropsRaw values
2021-11-14 to 2021-12-14One value per minuteHourly dropsRaw values
2021-12-14 to 2022-01-13One value per minuteHourly dropsRaw values
2022-01-13 to 2022-02-12One value per minuteHourly dropsRaw values
2022-02-12 to 2022-03-14One value per minuteHourly dropsRaw values
2022-03-14 to 2022-04-13One value per minuteHourly dropsRaw values
2022-04-13 to 2022-05-13One value per minuteHourly dropsRaw values
2022-05-13 to 2022-06-12One value per minuteHourly dropsRaw values
2022-06-12 to 2022-07-12One value per minuteHourly dropsRaw values
2022-07-12 to 2022-08-11One value per minuteHourly dropsRaw values
2022-08-11 to 2022-09-10One value per minuteHourly dropsRaw values
2022-09-10 to 2022-10-10One value per minuteHourly dropsRaw values
2022-10-10 to 2022-11-09One value per minuteHourly dropsRaw values
2022-11-09 to 2022-12-09One value per minuteHourly dropsRaw values
2022-12-09 to 2023-01-08One value per minuteHourly dropsRaw values
2023-01-08 to 2023-02-07One value per minuteHourly dropsRaw values
2023-02-07 to 2023-03-09One value per minuteHourly dropsRaw values
2023-03-09 to 2023-04-08One value per minuteHourly dropsRaw values
2023-04-08 to 2023-05-08One value per minuteHourly dropsRaw values
2023-05-08 to 2023-06-07One value per minuteHourly dropsRaw values
2023-06-07 to 2023-07-07One value per minuteHourly dropsRaw values
2023-07-07 to 2023-08-06One value per minuteHourly dropsRaw values
2023-08-06 to 2023-09-05One value per minuteHourly dropsRaw values
2023-09-05 to 2023-10-05One value per minuteHourly dropsRaw values
2023-10-05 to 2023-11-04One value per minuteHourly dropsRaw values
2023-11-04 to 2023-12-04One value per minuteHourly dropsRaw values
2023-12-04 to 2024-01-03One value per minuteHourly dropsRaw values
2024-01-03 to 2024-02-02One value per minuteHourly dropsRaw values
2024-02-02 to 2024-03-03One value per minuteHourly dropsRaw values
2024-03-03 to 2024-03-28One value per minuteHourly dropsRaw values (Interval incomplete, 5 day(s) missing)