1.234,2.345,3.456,4.567
9.999,9.998,9.997,9.996
102.01,-0.564,99.991,-1
fred,wilma,barney,betty
one,two,three,four
1,2,3,4
1.0,2.0,3.0,4.0
10,20,30,40
-10,-10.1,-10.2,-10.3
