Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 07.04.2010 beginning time = 1280 min.(UT), 21:20 UT Xbegin = -9.312 nT time of max = 1323 min.(UT), 22: 3 UT Xmax = 11.862 nT Y at Xmax = -3.156 nT endtime = 1364 min.(UT), 22:44 UT Xend = -2.538 nT amplitude = 21.174 nT base duration time = 84 min. 2sigma = 10.986 nT duration at 2sigma = 4 min. flagbegin = 4 flagend = 0 flagxcheck = 0