Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 31.03.2010 beginning time = 1405 min.(UT), 23:25 UT Xbegin = -5.972 nT time of max = 1416 min.(UT), 23:36 UT Xmax = 6.208 nT Y at Xmax = -5.674 nT endtime = 1440 min.(UT), 24: 0 UT Xend = 0.498 nT amplitude = 12.180 nT base duration time = 35 min. 2sigma = 3.915 nT duration at 2sigma = 7 min. flagbegin = 0 flagend = 0 flagxcheck = 0