Union VS JDFS Alberts

{"lg_-1":[0,0,0,0],"lg_-1_6":[0,0,0,0]}

{"lg_-1":[1,1,0,2],"lg_-1_6":[1,1,0,2],"lg_323":[1,1,null,2],"lg_323_6":[1,1,null,2]}

{"lg_-1":[4,3,2,9],"lg_-1_6":[4,1,1,6],"lg_286":[4,3,2,9],"lg_286_6":[4,1,1,6]}

{"lg_-1":[1,0,0,1],"lg_-1_6":[1,0,0,1],"lg_323":[1,null,null,1],"lg_323_6":[1,null,null,1]}

{"lg_-1":[2,0,1,3],"lg_-1_6":[2,0,1,3],"lg_286":[2,null,1,3],"lg_286_6":[2,null,1,3]}