Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 10.09.2017 beginning time = 1325 min.(UT), 22: 5 UT Xbegin = -11.300 nT time of max = 1378 min.(UT), 22:58 UT Xmax = 10.742 nT Y at Xmax = 1.338 nT endtime = 1449 min.(UT), 24: 9 UT Xend = -9.623 nT amplitude = 22.042 nT base duration time =124 min. 2sigma = 5.675 nT duration at 2sigma = 20 min. flagbegin = 0 flagend = 0 flagxcheck = 0