$ powerstat -Rg
powerstat needs to be run with root privilege when using -g, -p, -r, -s options.

$ sudo powerstat -Rg 10 12
Running for 120.0 seconds (12 samples at 10.0 second intervals).
Power measurements will start in 0 seconds time.

  Time    User  Nice   Sys  Idle    IO  Run Ctxt/s  IRQ/s Fork Exec Exit  Watts   GPU W
14:48:18   6.4   0.0   1.9  91.4   0.3    1   3978    865    1    0    0   5.04    4.27
14:48:28   5.4   0.0   2.0  92.4   0.2    1   3969    834    0    0    0   5.01    4.06
14:48:38   3.4   0.0   1.7  94.8   0.1    1   3025    709    0    0    1   3.92    1.66
14:48:48   7.9   0.0   1.9  90.0   0.3    1   4501    945    4    0    0   5.83    5.48
14:48:58   3.7   0.0   1.5  94.7   0.1    1   2242    640    3    0    4   3.84    0.76
14:49:08   2.1   0.0   1.6  96.3   0.1    1   2236    607    0    0    2   3.40    1.21
14:49:18   1.8   0.0   1.4  96.7   0.0    2   2160    572    0    0    1   3.15    0.39
14:49:28   1.9   0.0   1.5  96.6   0.1    1   2229    609    0    0    0   3.47    1.38
14:49:38   2.3   0.0   1.4  96.3   0.0    1   2184    597    0    0    0   3.16    0.09
14:49:48   2.3   0.0   1.6  96.0   0.1    1   2209    613    1    0    1   3.27    0.85
14:49:58   4.0   0.0   2.0  90.3   3.7    1   2768    757    3    0    2   4.67    6.10
14:50:08   2.5   0.0   1.5  95.7   0.3    1   2731    708    0    0    1   3.89    2.57
-------- ----- ----- ----- ----- ----- ---- ------ ------ ---- ---- ---- ------  ------
 Average   3.6   0.0   1.7  94.3   0.4  1.1 2852.7  704.6  1.0  0.0  1.0   4.05    2.40
  StdDev   1.9   0.0   0.2   2.4   1.0  0.3  804.3  116.6  1.4  0.0  1.2   0.84    1.98
-------- ----- ----- ----- ----- ----- ---- ------ ------ ---- ---- ---- ------  ------
 Minimum   1.8   0.0   1.4  90.0   0.0  1.0 2160.2  571.7  0.0  0.0  0.0   3.15    0.09
 Maximum   7.9   0.0   2.0  96.7   3.7  2.0 4500.7  944.8  4.0  0.0  4.0   5.83    6.10
-------- ----- ----- ----- ----- ----- ---- ------ ------ ---- ---- ---- ------  ------
Summary:
CPU:   4.05 Watts on average with standard deviation 0.84  
GPU:   2.40 Watts on average with standard deviation 1.98  
Note: power read from RAPL domains: uncore, core, package-0.
These readings do not cover all the hardware in this device.