PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-19:58:00
G01     50.3           25.5               11.7 +/-    0.94      22.5 +/-    0.94  0.030 / 0.060
G06     178.9          22.3               15.0 +/-    3.18      31.3 +/-    3.18  0.040 / 0.050
G11     44.4           15.2               10.0 +/-    1.21      24.7 +/-    1.21  0.170 / 0.470
G13     250.4          31.4               14.4 +/-    0.94      24.5 +/-    0.94  0.160 / 0.390
G15     283.6          16.0               12.4 +/-    1.45      30.1 +/-    1.45  0.060 / 0.140
G17     309.9          79.1               13.8 +/-    0.88      14.0 +/-    0.88  0.060 / 0.130
G19     244.7          59.8               14.4 +/-    0.87      16.4 +/-    0.87  0.080 / 0.170
G28     44.3           56.1               12.7 +/-    0.38      15.0 +/-    0.38  0.080 / 0.190
G30     148.8          40.1               14.8 +/-    1.12      21.5 +/-    1.12  0.090 / 0.160