Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 29.07.2021 beginning time = 1280 min.(UT), 21:20 UT Xbegin = -2.842 nT time of max = 1303 min.(UT), 21:43 UT Xmax = 9.076 nT Y at Xmax = 4.566 nT endtime = 1345 min.(UT), 22:25 UT Xend = -3.270 nT amplitude = 11.918 nT base duration time = 65 min. 2sigma = 4.839 nT duration at 2sigma = 20 min. flagbegin = 0 flagend = 0 flagxcheck = 0