Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 04.02.2011 beginning time = 1098 min.(UT), 18:18 UT Xbegin = -23.352 nT time of max = 1142 min.(UT), 19: 2 UT Xmax = 37.718 nT Y at Xmax = 12.798 nT endtime = 1178 min.(UT), 19:38 UT Xend = -29.260 nT amplitude = 61.070 nT base duration time = 80 min. 2sigma = 16.158 nT duration at 2sigma = 36 min. flagbegin = 0 flagend = 0 flagxcheck = 0