Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 29.09.2017 beginning time = 1232 min.(UT), 20:32 UT Xbegin = -5.778 nT time of max = 1299 min.(UT), 21:39 UT Xmax = 8.596 nT Y at Xmax = 0.254 nT endtime = 1335 min.(UT), 22:15 UT Xend = -1.780 nT amplitude = 14.374 nT base duration time =103 min. 2sigma = 6.176 nT duration at 2sigma = 13 min. flagbegin = 0 flagend = 0 flagxcheck = 0