Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 27.08.2017 beginning time = 1313 min.(UT), 21:53 UT Xbegin = -6.772 nT time of max = 1364 min.(UT), 22:44 UT Xmax = 8.132 nT Y at Xmax = -0.462 nT endtime = 1407 min.(UT), 23:27 UT Xend = -3.398 nT amplitude = 14.904 nT base duration time = 94 min. 2sigma = 5.433 nT duration at 2sigma = 19 min. flagbegin = 0 flagend = 0 flagxcheck = 0