Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 12.07.2021 beginning time = 1389 min.(UT), 23: 9 UT Xbegin = -2.898 nT time of max = 1415 min.(UT), 23:35 UT Xmax = 5.876 nT Y at Xmax = -1.334 nT endtime = 1428 min.(UT), 23:48 UT Xend = -0.596 nT amplitude = 8.774 nT base duration time = 39 min. 2sigma = 4.092 nT duration at 2sigma = 10 min. flagbegin = 0 flagend = 0 flagxcheck = 0