https://ftp.pmel.noaa.gov/ctd/ryan/cd
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├── [ 4.0K Sep 30 13:37] gp605/
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├── [ 4.0K Sep 30 13:37] gp705/
├── [ 4.0K Sep 30 13:37] gp706/
├── [ 4.0K Sep 30 13:37] gp805/
└── [ 4.0K Sep 30 13:37] gp806/
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