Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 18.08.2017 beginning time = 1252 min.(UT), 20:52 UT Xbegin = 2.920 nT time of max = 1263 min.(UT), 21: 3 UT Xmax = 8.684 nT Y at Xmax = 2.786 nT endtime = 1302 min.(UT), 21:42 UT Xend = -6.608 nT amplitude = 5.764 nT base duration time = 50 min. 2sigma = 7.124 nT duration at 2sigma = 10 min. flagbegin = 0 flagend = 0 flagxcheck = 0