Parameters of the midlatitude positive bays (MPB)
 Calculated at Space Research and Technology Institute, Sofia, Bulgaria
 
 Station: PAG
 Date of observation: 21.09.2021
 
 beginning time = 1257 min.(UT), 20:57 UT
 Xbegin =         -2.082 nT
 time of max =    1272 min.(UT), 21:12 UT
 Xmax =           12.392 nT
 Y at Xmax =      -6.608 nT
 endtime =        1324 min.(UT), 22: 4 UT
 Xend =           -4.954 nT
 amplitude =      14.474 nT
 base duration time = 67 min.
 2sigma =          4.430 nT
 duration at 2sigma = 14 min.
 flagbegin = 0
 flagend =   0
 flagxcheck = 0