Tourangeau VS Chambray

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

{"lg_-1":[5,1,0,6],"lg_-1_6":[5,1,0,6],"lg_652":[5,1,null,6],"lg_652_6":[5,1,null,6]}

{"lg_-1":[0,1,2,3],"lg_-1_6":[0,1,2,3],"lg_652":[null,1,2,3],"lg_652_6":[null,1,2,3]}

{"lg_-1":[2,1,0,3],"lg_-1_6":[2,1,0,3],"lg_652":[2,1,null,3],"lg_652_6":[2,1,null,3]}

{"lg_-1":[0,0,1,1],"lg_-1_6":[0,0,1,1],"lg_652":[null,null,1,1],"lg_652_6":[null,null,1,1]}