Hello, I am downloading some data from this project from ENA:
There are cases where I do not understand the format. For instance, this is supposed to be a single-end file (it says "SINGLE"): https://www.ebi.ac.uk/ena/data/view/SRX4809217
but has three files instead, namely, SRR7976417.fastq.gz, SRR7976417_1.fastq.gz and SRR7976417_2.fastq.gz
On the other hand, this file: https://www.ebi.ac.uk/ena/data/view/SRX4809200
is shown as paired-end (says "PAIRED") but is a single file.
For most of the other data in this project, SINGLE has a single file and PAIRED has 3 files (I guess read1, read2, orphan read). For instance:
How to know if the problematic files are really single-end or paired-end?
Thanks very much