Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 16.04.2021 beginning time = 1081 min.(UT), 18: 1 UT Xbegin = -9.860 nT time of max = 1113 min.(UT), 18:33 UT Xmax = 19.298 nT Y at Xmax = 6.426 nT endtime = 1156 min.(UT), 19:16 UT Xend = -6.128 nT amplitude = 29.158 nT base duration time = 75 min. 2sigma = 9.892 nT duration at 2sigma = 17 min. flagbegin = 0 flagend = 0 flagxcheck = 0