PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-22:57:30
G02     202.1          32.1               13.0 +/-    1.33      21.7 +/-    1.33  0.090 / 0.070
G06     169.0          63.3               11.6 +/-    0.54      12.8 +/-    0.54  0.130 / 0.090
G12     304.6          10.6               -7.3 +/-    8.66     -20.0 +/-    8.66  0.050 / 0.030
G17     33.9           50.7                9.6 +/-    1.13      12.0 +/-    1.13  0.040 / 0.030
G19     354.3          67.0                9.4 +/-    1.18      10.1 +/-    1.18  0.060 / 0.080
G24     299.8          37.4                9.2 +/-    1.79      13.9 +/-    1.79  0.060 / 0.090
G28     96.9           36.8               10.9 +/-    0.58      16.8 +/-    0.58  0.110 / 0.230