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Table B.1

Examples of column densities for the adopted conditions from a full grid non-LTE calculations in the Orion Bar and Orion S.

Source Molecule Transition Tkin and n(H2) (K and cm-3)
20 and 104 60 and 106 100 and 108

N from RADEX Model with Tbg = 2.73 K (cm-2)

Orion Bar o-H218O 110−101 2.19×1015 1.65×1012 1.20×1011
p-H218O 111−000 3.08×1016 1.75×1013 2.66×1011

Orion S o-H218O 110−101 1.13×1016 8.57×1012 6.06×1011

N from RADEX Model with Td = 49 K and β = 1.6 (cm-2)

Orion Bar o-H218O 110−101 2.80×1012 1.49×1011
p-H218O 111−000 2.01×1013 2.96×1011

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