Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 04.10.2015 beginning time = 1249 min.(UT), 20:49 UT Xbegin = -6.266 nT time of max = 1275 min.(UT), 21:15 UT Xmax = 19.646 nT Y at Xmax = -6.428 nT endtime = 1309 min.(UT), 21:49 UT Xend = -10.854 nT amplitude = 25.912 nT base duration time = 60 min. 2sigma = 8.641 nT duration at 2sigma = 26 min. flagbegin = 0 flagend = 0