Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 31.10.2015 beginning time = 1300 min.(UT), 21:40 UT Xbegin = -6.634 nT time of max = 1324 min.(UT), 22: 4 UT Xmax = 6.546 nT Y at Xmax = -1.600 nT endtime = 1356 min.(UT), 22:36 UT Xend = -2.078 nT amplitude = 13.180 nT base duration time = 56 min. 2sigma = 3.204 nT duration at 2sigma = 20 min. flagbegin = 0 flagend = 0