Parameters of the midlatitude positive bays (MPB)
 Calculated at Space Research and Technology Institute, Sofia, Bulgaria
 
 Station: PAG
 Date of observation: 17.09.2021
 
 beginning time = 1194 min.(UT), 19:54 UT
 Xbegin =        -21.384 nT
 time of max =    1221 min.(UT), 20:21 UT
 Xmax =           22.156 nT
 Y at Xmax =      -0.714 nT
 endtime =        1249 min.(UT), 20:49 UT
 Xend =           -7.444 nT
 amplitude =      43.540 nT
 base duration time = 55 min.
 2sigma =         10.439 nT
 duration at 2sigma = 28 min.
 flagbegin = 0
 flagend =   0
 flagxcheck = 0