MOS tool definition on PSNR
 

Greetings,

i have a question while i'm using MOS in 5 psnr.txt
it comes out like this

psnr_01.txt 0.00 11.64 69.09 17.82 1.45 3.09
psnr_02.txt 0.00 3.56 79.36 15.66 1.42 3.15
psnr_03.txt 0.00 0.00 75.80 23.13 1.07 3.25
psnr_04.txt 0.00 0.36 88.45 9.75 1.44 3.12
psnr_05.txt 0.00 12.45 75.09 10.94 1.51 3.02
ref_psnr.txt 0.00 0.00 8.00 63.00 29.00 4.21

can you tell me what every each column means?
thank you for any reply