PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-21:57:30
G02     200.6          25.2               17.0 +/-    3.25      33.0 +/-    3.25  0.080 / 0.110
G06     171.9          56.1               15.3 +/-    0.46      18.0 +/-    0.46  0.070 / 0.100
G13     223.4          10.7               18.4 +/-    4.30      50.7 +/-    4.30  0.230 / 0.450
G17     27.0           56.2               13.6 +/-    0.79      16.0 +/-    0.79  0.230 / 0.470
G19     336.4          70.1               13.4 +/-    0.86      14.1 +/-    0.86  0.040 / 0.030
G24     306.2          33.2               13.3 +/-    1.67      21.9 +/-    1.67  0.040 / 0.030
G28     89.3           41.0               12.9 +/-    0.91      18.5 +/-    0.91  0.060 / 0.080