captures.md

+This directory contains the calibration data (i.e., captures) for each station of the network, in the format of FITS files automatically acquired by FreeTure each 10 minutes during the day- and night-time.
+
+This directory is organized as follows:
+```
+captures/
+↳ CODE/
+  ↳ YYYYMM/
+    ↳ CODE_YYYYMMDDTHHMMSS_UT-0.fit
+      [...]
+```
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