PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/21-21:43:00
G01     95.8           29.9               12.1 +/-    0.94      21.2 +/-    0.94  0.050 / 0.060
G07     121.6          44.8               13.1 +/-    0.97      17.7 +/-    0.97  0.040 / 0.060
G08     41.7           10.4                8.5 +/-    2.29      23.5 +/-    2.29  0.080 / 0.140
G11     73.0           41.2               11.3 +/-    1.47      16.1 +/-    1.47  0.080 / 0.130
G13     299.8          34.8                9.6 +/-    1.72      15.3 +/-    1.72  0.040 / 0.050
G17     209.8          49.9               12.6 +/-    0.59      15.9 +/-    0.59  0.040 / 0.040
G18     66.2           23.4                9.5 +/-    1.77      19.3 +/-    1.77  0.170 / 0.230
G19     211.9          22.1               13.9 +/-    1.78      28.9 +/-    1.78  0.200 / 0.190
G28     330.2          61.3                9.1 +/-    0.76      10.3 +/-    0.76  0.030 / 0.030
G30     84.1           78.6               11.4 +/-    0.74      11.6 +/-    0.74  0.030 / 0.030