until 15:15 we have measured with I_e = 100 mA (3 loops per file) 
E_cool HV = 225255 V 


after that (at 15:26) we changed to I_e = 200 mA (2 loops per file) 
E_cool HV = 225272 V 

after that (at 17:15) we changed to I_e = 50 mA (first 4 then 6 loops per file) 
E_cool HV = 225247 V