Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 01.09.2013 beginning time = 1165 min.(UT), 19:25 UT Xbegin = -3.168 nT time of max = 1181 min.(UT), 19:41 UT Xmax = 6.752 nT Y at Xmax = -4.666 nT endtime = 1212 min.(UT), 20:12 UT Xend = -2.948 nT amplitude = 9.920 nT base duration time = 47 min. 2sigma = 3.828 nT duration at 2sigma = 16 min. flagbegin = 0 flagend = 0 flagxcheck = 0