Ublox Neo M8T dataset (NMi campaign 2017-2020: 15-second resolution data) related to the publication: Potential of Cost-Efficient Single Frequency GNSS Receivers for Water Vapor Monitoring

RINEX3 (https://files.igs.org/pub/data/format/rinex305.pdf) Hatanaka-compressed (http://sopac.ucsd.edu/hatanaka.shtml) GNSS (Global Navigation Satellite System) data of single-frequency observations obtained by the Ublox Neo M8T receiver (Evaluation Toolkit) and standard Ublox patch antenna. <br> The data is downsampled to 15-second observations spanning from DOY (day of year) 95 in 2017 to DOY 83 in 2020. <br> The unit was placed on the rooftop of the observatory of the NMi building in Delft (approx. coordinate 51.986166, 4.387678). <br> The receiver was connected to a constant power supply. The antenna was placed on the flat rooftop (no significant obstruction in the sky) with a 10cm circular glound plane underneath.本数据集为Ublox Neo M8T接收机（配套评估套件，Evaluation Toolkit）与标准Ublox贴片天线采集的单频观测全球导航卫星系统（Global Navigation Satellite System，GNSS）数据，采用RINEX 3（RINEX3，https://files.igs.org/pub/data/format/rinex305.pdf）格式与Hatanaka压缩格式（Hatanaka-compressed，http://sopac.ucsd.edu/hatanaka.shtml）存储。数据已下采样为15秒间隔的观测序列，观测时段覆盖2017年第95个年积日至2020年第83个年积日。整套设备部署于代尔夫特市NMi大楼天文台的屋顶，近似坐标为51.986166、4.387678。接收机接入恒压电源；天线安装于平坦屋顶（天空视野无明显遮挡），下方配备10厘米圆形接地平面。