#time B531 B570 B900 B970 PRI WI
09:00:00 0.6184 0.6131 0.6148 0.6059 0.00430369 1.01469
11:20:00 0.6731 0.6721 0.6878 0.6691 0.000743384 1.02795
ave 0.645750 0.642600 0.651300 0.637500 0.00244499 1.02165