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Table 1

Journal of the observations.

Field Date Filter T exp Seeing
(d/m/y) (s) (′′)

Serpens Core 17-19/05/2008 CH4off 2520 0.6
17-19/05/2008 CH4on 7560 0.6
20/04/2008 J 8405 0.7
20/04/2008 H 1405 0.7
20/04/2008 K S 1405 0.7

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