Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 22.08.2013 beginning time = 1306 min.(UT), 21:46 UT Xbegin = -12.156 nT time of max = 1390 min.(UT), 23:10 UT Xmax = 10.294 nT Y at Xmax = -1.520 nT endtime = 1439 min.(UT), 23:59 UT Xend = -10.217 nT amplitude = 22.450 nT base duration time =133 min. 2sigma = 7.689 nT duration at 2sigma = 21 min. flagbegin = 4 flagend = 0 flagxcheck = 0