Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 29.09.2017 beginning time = 1372 min.(UT), 22:52 UT Xbegin = -8.144 nT time of max = 1410 min.(UT), 23:30 UT Xmax = 8.838 nT Y at Xmax = 0.158 nT endtime = 1462 min.(UT), 24:22 UT Xend = -4.068 nT amplitude = 16.982 nT base duration time = 90 min. 2sigma = 6.176 nT duration at 2sigma = 27 min. flagbegin = 0 flagend = 0 flagxcheck = 0