pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
f,x,f-x,59,0.6330767243010155,0.3809043988185208,$blah
f,z,f-z,10,0.4515549159652815,0.3987301842569533,$null
f,d,f-d,60,,0.4408231901628116,$blah
f,t,f-t,-56,0.26536750832497336,0.5260855265978671,$blah
f,l,f-l,-1,0.6704862188501712,0.5401924954289701,$null
f,y,f-y,29,0.09917846167904198,0.6547129575231422,$null
f,c,f-c,55,,0.6777644586233594,$null
f,n,f-n,-45,0.44338308606070165,0.6856802654812854,$blah
f,s,f-s,69,0.866447888506801,0.7899846642347539,$null
f,j,f-j,56,0.22136720007399002,0.909387638427892,$null
f,b,f-b,44,,0.9106169537187105,$null
f,a,f-a,47,,0.9779444845768627,$null