PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-14:42:30
G03     200.9          51.3                3.8 +/-   21.90       4.8 +/-   21.90  0.140 / 0.130
G07     262.3          23.3               10.7 +/-    1.81      21.7 +/-    1.81  0.090 / 0.120
G09     311.8          30.3                9.3 +/-    1.51      16.2 +/-    1.51  0.030 / 0.040
G16     93.6           65.6               10.8 +/-    0.75      11.7 +/-    0.75  0.040 / 0.040
G22     183.8          34.0               11.5 +/-    1.26      18.6 +/-    1.26  0.220 / 0.200
G23     334.1          63.5               10.2 +/-    0.68      11.3 +/-    0.68  0.110 / 0.190
G26     52.1           42.5                9.1 +/-    0.83      12.7 +/-    0.83  0.110 / 0.110
G27     132.8          12.6               11.5 +/-    1.77      30.3 +/-    1.77  0.170 / 0.090