Parameters of the midlatitude positive bays (MPB)
 Calculated at Space Research and Technology Institute, Sofia, Bulgaria
 
 Station: PAG
 Date of observation: 17.04.2009
 
 beginning time = 1239 min.(UT), 20:39 UT
 Xbegin =         -5.310 nT
 time of max =    1276 min.(UT), 21:16 UT
 Xmax =            9.170 nT
 Y at Xmax =      -0.102 nT
 endtime =        1324 min.(UT), 22: 4 UT
 Xend =           -5.010 nT
 amplitude =      14.480 nT
 base duration time = 85 min.
 2sigma =          3.878 nT
 duration at 2sigma = 30 min.
 flagbegin = 0
 flagend =   0
 flagxcheck = 0