[ferret_users] Simple line plot

Dear Ferret users

I'm trying to make a simple line plot from an ASCII file. I think I am almost there, but I can't figure out how to proceed. My ascii file is called "data1.asc" and contains:

A1 11/1/2013 00:05:00 20 74
A2 11/1/2013 05:05:00 21 59
A3 11/1/2013 10:05:00 20 78
A4 11/4/2013 15:05:00 22 102
A5 11/9/2013 06:05:00 26 77
A6 11/12/2013 22:05:00 30 84

Each column represents:
line_#, date, time(hh:mm:ss), param1, param2

To read the file into Ferret:
yes? SET DATA/FORMAT=DELIMITED/delim=" "/var="linenum,date,time,param1,param2"/type="text,date,time,num,num"/col=5 data1.asc

And if I do a listing on the variables, all looks good:
yes? list date
             VARIABLE : DATE (days)
                        Julian days since 1-Jan-1900
             FILENAME : data1.asc
             SUBSET   : 6 points (X)
1   / 1: 41577.
2   / 2: 41577.
3   / 3: 41577.
4   / 4: 41580.
5   / 5: 41585.
6   / 6: 41588.
yes? list time
             VARIABLE : TIME (hours)
                        Time of day
             FILENAME : data1.asc
             SUBSET   : 6 points (X)
1   / 1:   0.08
2   / 2:   5.08
3   / 3: 10.08
4   / 4: 15.08
5   / 5:   6.08
6   / 6: 22.08
yes? list param1
             VARIABLE : PARAM1
             FILENAME : data1.asc
             SUBSET   : 6 points (X)
1   / 1: 20.00
2   / 2: 21.00
3   / 3: 20.00
4   / 4: 22.00
5   / 5: 26.00
6   / 6: 30.00

However... how can I do to make a line plot that would plot param1 (y-axis) as a function of time (both date & time) (x-axis)?

Thanks!