Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 17.12.2013 beginning time = 1092 min.(UT), 18:12 UT Xbegin = -3.790 nT time of max = 1123 min.(UT), 18:43 UT Xmax = 9.116 nT Y at Xmax = 6.896 nT endtime = 1156 min.(UT), 19:16 UT Xend = -4.110 nT amplitude = 12.906 nT base duration time = 64 min. 2sigma = 2.832 nT duration at 2sigma = 25 min. flagbegin = 0 flagend = 0 flagxcheck = 0