Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 15.08.2021 beginning time = 1362 min.(UT), 22:42 UT Xbegin = -5.632 nT time of max = 1391 min.(UT), 23:11 UT Xmax = 8.752 nT Y at Xmax = -11.330 nT endtime = 1442 min.(UT), 24: 2 UT Xend = -3.693 nT amplitude = 14.384 nT base duration time = 80 min. 2sigma = 6.376 nT duration at 2sigma = 21 min. flagbegin = 0 flagend = 0 flagxcheck = 0