Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 17.03.2015 beginning time = 1277 min.(UT), 21:17 UT Xbegin = -18.832 nT time of max = 1313 min.(UT), 21:47 UT Xmax = 17.814 nT Y at Xmax = -8.996 nT endtime = 1385 min.(UT), 23: 5 UT Xend = -53.638 nT amplitude = 36.646 nT base duration time =108 min. 2sigma = 32.469 nT duration at 2sigma = 0 min. flagbegin = 0 flagend = 4