Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 04.07.2015 beginning time = 1175 min.(UT), 19:35 UT Xbegin = -13.086 nT time of max = 1231 min.(UT), 20:31 UT Xmax = 19.404 nT Y at Xmax = -6.332 nT endtime = 1281 min.(UT), 21:21 UT Xend = -12.618 nT amplitude = 32.490 nT base duration time =106 min. 2sigma = 10.452 nT duration at 2sigma = 31 min. flagbegin = 0 flagend = 0