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Day 10 of the Perdigao IOP.   The weather was cold and rainy with occasional surface gusts.

Four sondes launched at 00UT, 06UT, 12UT & 18UT without issues. The 06UT, 12UT, and 18UT sonde were inflated and launched in rain.

Starting at midnight, we used the new replacement regulator. The gas flow is substantially slower and we need to take the extra preparation time into account. Furthermore the gas amount is slightly different, since the cylinders don't cool as much.





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