Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 21.07.2013 beginning time = 1228 min.(UT), 20:28 UT Xbegin = -1.520 nT time of max = 1264 min.(UT), 21: 4 UT Xmax = 5.614 nT Y at Xmax = 1.442 nT endtime = 1309 min.(UT), 21:49 UT Xend = -2.784 nT amplitude = 7.134 nT base duration time = 81 min. 2sigma = 2.599 nT duration at 2sigma = 22 min. flagbegin = 0 flagend = 0 flagxcheck = 0