Take the average of the measured values wich cannot be converted from string to number..

Question

Hello,
I have a Keithley 182 Digital Nanometer (K182). I am usins it to measure voltage at high temperature. I want K182 to measure 3 times and then take the avarage of collected data.
1. First problem is, as you can see from picture, string to number conversion. I tried many ways but I couldn't do it. Values as you see 0,00, and once was
3,98E-3
0,00
392,0
originan values were
3,98E-3
3,95E-3
3,93E-3
in table, values generally like this.
2. I need to take avarege. So i need toindez data, then take avarage. So, I have also problem here...
Could you please help on thic topic. Thanks in advance.
Attachments:
string-number.png ‏19 KB
string-number-panel.png ‏30 KB

Answer 1

thank you, I will try this solution. Also I want to do one more thing. So, I am collecting data and putting them in to table let say data are like this
Temp1     Temp2   Volt
123,3       234,5      ...
234,4       567,7
345,6       789,9
456,7       678,8
I want to put data with increment like this given below:
No  Temp1     Temp2   Volt
1    123,3       234,5      ...
2    234,4       567,7    
3    345,6       789,9
4    456,7       678,8
there are no exact number of data. the number of data can change from measurement to measurement (1000, 2000, 500 more or less). How can I program this increment in my system.
My system is include LakeShore 336 temperature conroller and Keithley 182 Nanovoltmeter. I will set the temperature specified value from room temperature wtih specific ramp rate. Meanwhile I will measure the voltage from sample via K182. So, I can measure both temp, and voltage via taking help from u.