Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 03.09.2017 beginning time = 1318 min.(UT), 21:58 UT Xbegin = -3.518 nT time of max = 1360 min.(UT), 22:40 UT Xmax = 5.056 nT Y at Xmax = -4.358 nT endtime = 1405 min.(UT), 23:25 UT Xend = -2.450 nT amplitude = 8.574 nT base duration time = 87 min. 2sigma = 3.675 nT duration at 2sigma = 18 min. flagbegin = 0 flagend = 0 flagxcheck = 0