### Planck 2015 CMB temperature variance

Posted:

**February 09 2018**I'm using Planck 2015 CMB temperature (intensity) SMICA pipeline maps and am trying to determine the temperature variance of each pixel. Variance and hit-count were provided with the 2013 CMB maps (there were 3 columns: intensity, hit-count and variance) but they aren't in the 2015 maps (there is only an intensity column).

So I've tried to determine the variance from the half-difference of the half-mission maps but my results look dodgy. I'll try the half-ring maps next but I'm not optimistic.

If anyone else has either found the variances somewhere or managed to determine them themselves I would be very grateful if you could point me in the right direction please!

Thank you :)

So I've tried to determine the variance from the half-difference of the half-mission maps but my results look dodgy. I'll try the half-ring maps next but I'm not optimistic.

If anyone else has either found the variances somewhere or managed to determine them themselves I would be very grateful if you could point me in the right direction please!

Thank you :)