Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 07.09.2017 beginning time = 1379 min.(UT), 22:59 UT Xbegin = -21.492 nT time of max = 1416 min.(UT), 23:36 UT Xmax = 22.222 nT Y at Xmax = 31.834 nT endtime = 1434 min.(UT), 23:54 UT Xend = -14.964 nT amplitude = 43.714 nT base duration time = 55 min. 2sigma = 9.738 nT duration at 2sigma = 17 min. flagbegin = 0 flagend = 0 flagxcheck = 0