I made focussed shutdowns yesterday of just one or a few fans. The range and spectra were not strongly affected, and I did not find a particularly bad fan.
Nov. 9 UTC
CER ACs
Off 16:30
On 16:40
Off 16:50
On 17:00
Turbine shutdowns
SF4 off : 17:10
SF4 on: 17:21
SF3 and 4 off: 17:30
SF3 and 4 back on: 17:40
SF3 off: 17:50
SF3 back on: 18:00
SF1 and 4 off: 18:30
SF1 and 4 on: 18;35
SF1 and 4 off: 19:00
SF1 and 4 on: 19:18
SF1 and 3 off: 19:30
SF1 and 3 back on: 19:40
SF1 off: 19:50
SF1 back on: 20:00
SF1 and 4 off 20:10
SF1 and 4 back on: 20:20
SF3 off: 22:50
SF3 on: 23:00
SF3 off: 3:41
SF3 on: 3:51
Nov 10 UTC
SF5,6 off 0:00
SF5,6 back on 0:10