Using SSRS line charts to graph time periods on the y-axis - reporting-services

Question

I am looking to to use an SSRS line chart to graph ending run times of jobs. I am using runtime on the y-axis and date on the x-axis. The graph looks like a flat line and the times do not show up on the y-axis, but integers show.
I also want to put a target line at a specific time to show our SLA time.
Here is example of data I am trying to graph, but I want a line.
+-------+----------+
| y | x |
+-------+----------+
| 10:05 | 3/1/2009 |
| 11:00 | 3/2/2009 |
| 10:15 | 3/3/2009 |
+-------+----------+
+-------+----------+----------+----------+
| 11:00 | | x | |
| 10:45 | | | |
| 10:30 | | | |
| 10:15 | | | x |
| 10:00 | x | | |
+-------+----------+----------+----------+
| | 3/1/2009 | 3/2/2009 | 3/3/2009 |
+-------+----------+----------+----------+

Answer 1

Lets say you have table Times with Date and Hours.
Declare Report parameter #LimitHourParam decimal - for target time.
Set query of dataset:
SELECT Date, SUM(Hours) AS Hours, 'Actual Hours' AS LimitHour
FROM Times
GROUP BY Date
UNION ALL
SELECT DISTINCT Date, #LimitHourParam AS Hours, 'Hours Limit' AS LimitHour
FROM Times
So you will get in result hours grouped by dates and some hour limit for unique each date.
Place Chart control in report page.
Go to Chart Properties->Data
Press "Add Values"
Erase value of Label and set Value to
=Sum(Fields!Hours.Value)
Go to "Point Labels" tab of "Edit Chart Value" dialog, check "Show point labels", set Data label to
= String.Format("{0}:{1}", (Fields!Hours.Value / 1) - (Fields!Hours.Value Mod 1), (Fields!Hours.Value Mod 1)*60/1 - (Fields!Hours.Value Mod 1)*60 Mod 1)
Add Category Groups, set "Group On" expression to
=Fields!Date.Value
Add Series Group, set both "Group On" expression and Label values to
=Fields!LimitHour.Value
Go to Chart Properties->X Axis, set labels format dd/mm/yyyy
Result should look like this: