num1 num2 num3 int1 fac1 fac2 cha1 cha2 Date POSIXt
 1                1   f q   1900-01-01 1900-01-01 01:01:01
 2 1.0 1316666.5  2 a g r z            1900-01-01 01:01:01
 3 1.5 1188830.5  3 b h s y 1900-01-01 1900-01-01 01:01:01
 4 2.0 1271846.3  4 c i t x 1900-01-01 1900-01-01 01:01:01
 5 2.5  829737.4    d j u w 1900-01-01                    
 6 3.0 1240967.3  5 e k v v 1900-01-01 1900-01-01 01:01:01
 7 3.5  919684.4  6 f l w u 1900-01-01 1900-01-01 01:01:01
 8 4.0  968214.6  7 g m x t 1900-01-01 1900-01-01 01:01:01
 9 4.5 1232076.4  8 h n y s 1900-01-01 1900-01-01 01:01:01
10 5.0 1141273.4  9 i o z r 1900-01-01 1900-01-01 01:01:01
   5.5  988481.4 10 j     q 1900-01-01 1900-01-01 01:01:01