The level 2 Alphas data product is no longer being maintained as of December 2010. 
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[PARENTDIR] Parent Directory                                   -   
[DIR] text/                         2013-07-30 14:54    -   
[   ] READ_ME_PLASTIC_Alphas_RA.pdf 2013-10-25 17:52   79K  
[DIR] CDFs/                         2011-04-11 16:17    -