Unique categories of geomagnetic activity 2010–2017

This is the dataset generated as described in Coxon et al. (2023): "Extreme Birkeland currents are more likely during geomagnetic storms on the dayside of the Earth". Please cite the following papers when using this data: Forsyth et al. (2015): https://doi.org/10.1002/2015JA021343 Walach & Grocott (2019): https://doi.org/10.1029/2019JA026816 Coxon et al. (2023): https://doi.org/10.1029/2023JA031946 This dataset is a list of timestamps at 1-minute cadence from 00:00 UT on 2010-01-01 to 23:59 UT on 2017-12-31. Each timestamp is assigned an integer category where the integer is defined as follows: 0. The timestamp is during quiet times 1. The timestamp is during storm times 2. The timestamp is during a quiet-time substorm 3. The timestamp is during a storm-time substorm