... (OVRO)

The Owens Valley Millimeter Array is operated by the California Institute of Technology under funding from the US National Science Foundation (grant No. AST-9981546).

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... (BIMA)

The BIMA array is operated by the Universities of California (Berkeley), Illinois, and Maryland, with support from the National Science Foundation (grants AST-9981308, AST-9981363 and AST-9981289).

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... (CSO)

The Caltech Submillimeter Observatory 10.4 m is operated by Caltech under a contract from the National Science Foundation (grant No. AST-9980846).

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... (OSO)

The Onsala 20 m telescope is operated by the Swedish National Facility for Radio Astronomy, Onsala Space Observatory at Chalmers University of Technology.

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