Hi everyone.
I have a series of data (3 columns and several rows). Here you have the
example:


date & time |value1|value2|
2006-07-11 00:00:00 | -203 | |
2006-07-11 08:00:00 | -204 | |
2006-07-11 16:00:00 | -204 | |
2006-07-12 00:00:00 | -204 | |
2006-07-12 08:00:00 | -204 | |
2006-07-12 16:00:00 | -205 | |
2006-07-13 00:00:00 | -205 | |
2006-07-13 08:00:00 | -206 | |
2006-07-13 16:00:00 | -206 | |
2006-07-14 00:00:00 | -207 | |
2006-07-14 08:00:00 | -207 | -103 |
2006-07-14 16:00:00 | -219 | |
2006-07-15 00:00:00 | -209 | |
2006-07-15 08:00:00 | -208 | |
2006-07-15 16:00:00 | -208 | |
2006-07-16 00:00:00 | -209 | |
2006-07-16 08:00:00 | -209 | |
2006-07-16 16:00:00 | -209 | |
2006-07-17 00:00:00 | -209 | |
2006-07-17 08:00:00 | -210 | |
2006-07-17 16:00:00 | -210 | |
2006-07-18 00:00:00 | -210 | -198 |
2006-07-18 08:00:00 | -211 | |
2006-07-18 16:00:00 | -211 | |
2006-07-19 00:00:00 | -212 | |

Column A: shows date & time of the measurement
Column B: major value
Column C: additional value (measurement taken only from time to time)

All this data must be plotted in one diagram (Column A should be
presented on X-axis). Values in column B should be presented as a line
graph, values in column C as a column or scatter graph. I've tried to
solve that problem for several hours but with no success. Can anyone
help me please? Thanks in advance.

gordom