Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 16.09.2017 beginning time = 1310 min.(UT), 21:50 UT Xbegin = 1.582 nT time of max = 1319 min.(UT), 21:59 UT Xmax = 5.280 nT Y at Xmax = -6.968 nT endtime = 1354 min.(UT), 22:34 UT Xend = -5.084 nT amplitude = 3.698 nT base duration time = 44 min. 2sigma = 8.785 nT duration at 2sigma = 0 min. flagbegin = 0 flagend = 0 flagxcheck = 0