Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 23.05.2017 beginning time = 1142 min.(UT), 19: 2 UT Xbegin = -4.980 nT time of max = 1169 min.(UT), 19:29 UT Xmax = 7.874 nT Y at Xmax = 4.158 nT endtime = 1254 min.(UT), 20:54 UT Xend = -5.026 nT amplitude = 12.854 nT base duration time =112 min. 2sigma = 4.981 nT duration at 2sigma = 21 min. flagbegin = 0 flagend = 4 flagxcheck = 0