Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 17.09.2018 beginning time = 1241 min.(UT), 20:41 UT Xbegin = -7.414 nT time of max = 1298 min.(UT), 21:38 UT Xmax = 6.748 nT Y at Xmax = 1.396 nT endtime = 1341 min.(UT), 22:21 UT Xend = -2.370 nT amplitude = 14.162 nT base duration time =100 min. 2sigma = 5.585 nT duration at 2sigma = 16 min. flagbegin = 0 flagend = 0 flagxcheck = 0