Download Option 1: download one single zipped file (~3.4GB) then unzip it to get all the files (a total of 90)
Hdata-202103.zip

Download Option 2: click each file's link to download one by one (a total of 90 files)
QE2021721_NIDA01_20210217172315.raw
QE2021721_NIDA02.raw
QE2021721_NIDA03.raw
QE2021721_NIDA04.raw
QE2021721_NIDA05.raw
QE2021721_NIDA06.raw
QE2021721_NIDA07.raw
QE2021721_NIDA08.raw
QE2021721_NIDA09.raw
QE2021721_NIDA10.raw
QE2021721_NIDA11.raw
QE2021721_NIDA12.raw
QE2021721_NIDA13.raw
QE2021721_NIDA14.raw
QE2021721_NIDA15.raw
QE2021721_NIDA16.raw
QE2021721_NIDA17.raw
QE2021721_NIDA18.raw
QE2021721_NIDA19.raw
QE2021721_NIDA20.raw
QE2021721_NIDA21.raw
QE2021721_NIDA22.raw
QE2021721_NIDA23.raw
QE2021721_NIDA24.raw
QE2021721_NIDA25.raw
QE2021721_NIDA26.raw
QE2021721_NIDA27.raw
QE2021721_NIDA28.raw
QE2021721_NIDA29.raw
QE2021721_NIDA30.raw
QE2021721_NIDA31.raw
QE2021721_NIDA32.raw
QE2021721_NIDA33.raw
QE2021721_NIDA34.raw
QE2021721_NIDA35.raw
QE2021721_NIDA36.raw
QE2021721_NIDA37.raw
QE2021721_NIDA38.raw
QE2021721_NIDA39.raw
QE2021721_NIDA40.raw
QE2021721_NIDA41.raw
QE2021721_NIDA42.raw
QE2021721_NIDA43.raw
QE2021721_NIDA44.raw
QE2021721_NIDA45.raw
QE2021721_NIDA46.raw
QE2021721_NIDA47.raw
QE2021721_NIDA48.raw
QE2021721_NIDA49.raw
QE2021721_NIDA50.raw
QE2021721_NIDA51.raw
QE2021721_NIDA52.raw
QE2021721_NIDA53.raw
QE2021721_NIDA54.raw
QE2021721_NIDA55.raw
QE2021721_NIDA56.raw
QE2021721_NIDA57.raw
QE2021721_NIDA58.raw
QE2021721_NIDA59.raw
QE2021721_NIDA60.raw
QE2021721_NIDA61.raw
QE2021721_NIDA62.raw
QE2021721_NIDA63.raw
QE2021721_NIDA64.raw
QE2021721_NIDA65.raw
QE2021721_NIDA66.raw
QE2021721_NIDA67.raw
QE2021721_NIDA68.raw
QE2021721_NIDA69.raw
QE2021721_NIDA70.raw
QE2021721_NIDA71.raw
QE2021721_NIDA72.raw
QE2021721_NIDA73.raw
QE2021721_NIDA74.raw
QE2021721_NIDA75.raw
QE2021721_NIDA76.raw
QE2021721_NIDA77.raw
QE2021721_NIDA78.raw
QE2021721_NIDA79.raw
QE2021721_NIDA80.raw
QE2021721_NIDA81.raw
QE2021721_NIDA82.raw
QE2021721_NIDA83.raw
QE2021721_NIDA84.raw
QE2021721_NIDA85.raw
QE2021721_NIDA86.raw
QE2021721_NIDA87.raw
QE2021721_NIDA88.raw
QE2021721_NIDA89.raw
QE2021721_NIDA90.raw