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For ALMA, configurations are not nearly so defined. First off, ALMA configurations are not specifically defined. They're characterized by 'typical' baseline minima and maxima, but those values are not hard limit. The change between 43C-2 and 43C-3 configurations is not the result of a large-effort short-time process. Instead, configuration changes are less defined, as ALMA antennae are shifted on a near-daily basis. An ALMA configuration change is more a matter of the new configuration's parameters better matching the current array layout.
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