Importing input data: format of the timeseries

The timeseries is an ascii text file

first row: header lines
body, each row is a timestep
body, first column: timesteps
body, consecutive columns: attribute values

precipitation at 3 rainstations, mm/6 hours
4
timesteps
rainstation 1
rainstation 2
rainstation 3
1      0.0     0.0     0.0
2      1.5     1.3     1.7
3      0.9     0.6     2.1
4      0.0     0.0     2.0
5      4.2     2.8     4.8
6      8.3     8.2     7.8
7     10.2     9.0    10.9
8     12.9    10.9    13.2
9      9.2     9.0     9.6
... etc.