I try to create a floating column chart for the daily minimum and maximum
temperature. I start by create a stacked column chart by ploting two series
of data: minimum temperature and (maximum - minimum) temperature, and then I
make the minimum temperature series invisible. This work fine if the minimum
and maxmum temperature both are above 0 degree or below 0 degree. It will not
work if the minimum is less than 0 degree and maximum is greater than 0
degree. How can I solve this problem?

Thanks.