Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 03.04.2010 beginning time = 1310 min.(UT), 21:50 UT Xbegin = -0.132 nT time of max = 1331 min.(UT), 22:11 UT Xmax = 9.590 nT Y at Xmax = 0.096 nT endtime = 1353 min.(UT), 22:33 UT Xend = -3.962 nT amplitude = 9.722 nT base duration time = 43 min. 2sigma = 7.032 nT duration at 2sigma = 12 min. flagbegin = 0 flagend = 0 flagxcheck = 0