Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 04.08.2015 beginning time = 1335 min.(UT), 22:15 UT Xbegin = -10.120 nT time of max = 1366 min.(UT), 22:46 UT Xmax = 14.168 nT Y at Xmax = -6.270 nT endtime = 1412 min.(UT), 23:32 UT Xend = -4.576 nT amplitude = 24.288 nT base duration time = 77 min. 2sigma = 5.011 nT duration at 2sigma = 30 min. flagbegin = 0 flagend = 0