Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 04.01.2011 beginning time = 1191 min.(UT), 19:51 UT Xbegin = -1.652 nT time of max = 1212 min.(UT), 20:12 UT Xmax = 6.320 nT Y at Xmax = 7.702 nT endtime = 1256 min.(UT), 20:56 UT Xend = -4.008 nT amplitude = 7.972 nT base duration time = 65 min. 2sigma = 3.053 nT duration at 2sigma = 20 min. flagbegin = 0 flagend = 0 flagxcheck = 0