Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 03.12.2013 beginning time = 1152 min.(UT), 19:12 UT Xbegin = -2.684 nT time of max = 1177 min.(UT), 19:37 UT Xmax = 15.308 nT Y at Xmax = 9.130 nT endtime = 1225 min.(UT), 20:25 UT Xend = -7.316 nT amplitude = 17.992 nT base duration time = 73 min. 2sigma = 5.045 nT duration at 2sigma = 24 min. flagbegin = 0 flagend = 0 flagxcheck = 0