Univ de Chile - Cobresal

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{"lg_-1":[5,0,1,6],"lg_-1_6":[5,0,1,6],"lg_122":[5,null,1,6],"lg_122_6":[5,null,1,6]}

{"lg_-1":[1,1,4,6],"lg_-1_6":[1,1,4,6],"lg_122":[1,1,4,6],"lg_122_6":[1,1,4,6]}

{"lg_-1":[3,0,0,3],"lg_-1_6":[3,0,0,3],"lg_122":[3,null,null,3],"lg_122_6":[3,null,null,3]}

{"lg_-1":[0,0,3,3],"lg_-1_6":[0,0,3,3],"lg_122":[null,null,3,3],"lg_122_6":[null,null,3,3]}