Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 20.07.2021 beginning time = 1225 min.(UT), 20:25 UT Xbegin = -6.444 nT time of max = 1256 min.(UT), 20:56 UT Xmax = 8.668 nT Y at Xmax = 1.084 nT endtime = 1295 min.(UT), 21:35 UT Xend = -2.716 nT amplitude = 15.112 nT base duration time = 70 min. 2sigma = 5.667 nT duration at 2sigma = 15 min. flagbegin = 0 flagend = 0 flagxcheck = 0