Ok, spent some hours trying to sort this out, hope someone can help me:
I have a table of numbers with 4 sensors reading per index like this (there is a seperate serial key field), there are thousands of readings.
INDEX,Value
1, 5
1, 8
1, 1
1, 23
2, 8
2, 31
2, 5
2, 8
3, 51
3, 4
3, 2
3, 5