pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
b,r,b-r,-100,0.33355653860508816,0.44183551186085057,$blah
g,r,g-r,50,0.4004498163160871,,$null
a,r,a-r,60,0.6389494948660052,,$null