Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 11.03.2011 beginning time = 1265 min.(UT), 21: 5 UT Xbegin = -17.854 nT time of max = 1285 min.(UT), 21:25 UT Xmax = 9.888 nT Y at Xmax = 0.508 nT endtime = 1292 min.(UT), 21:32 UT Xend = -0.308 nT amplitude = 27.742 nT base duration time = 27 min. 2sigma = 9.810 nT duration at 2sigma = 1 min. flagbegin = 0 flagend = 0 flagxcheck = 0