Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 05.04.2010 beginning time = 1257 min.(UT), 20:57 UT Xbegin = 2.300 nT time of max = 1282 min.(UT), 21:22 UT Xmax = 16.380 nT Y at Xmax = 6.312 nT endtime = 1322 min.(UT), 22: 2 UT Xend = -9.040 nT amplitude = 14.080 nT base duration time = 65 min. 2sigma = 19.271 nT duration at 2sigma = 0 min. flagbegin = 0 flagend = 0 flagxcheck = 0