in the instructions download file there is a list with the number of files of each subdirectory (particulate Track - pm25):
Note the size of each subdirectory:
dataset | n | size
-------------------------------------------
pm25/train/maiac/ | 4260 | 35.1GB
pm25/train/misr/ | 788 | 27.3GB
pm25/test/maiac/ | 2444 | 20.3GB
pm25/test/misr/ | 299 | 7.9GB
After my download of pm25/test/misr I got 229 files (not 299), with 7.85 GB. Can you confirm there are 299 files in this subdirectory?
@smcoder5 The public buckets are listed in the “Data download instructions” file mentioned by rdeggau. They individual filepaths are also listed in the metadata csvs, also available on the Data Download Page.