PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/21-23:42:40
G01     40.7           16.0                7.7 +/-    2.63      18.8 +/-    2.63  0.340 / 0.320
G06     178.0          35.5               10.3 +/-    1.97      16.2 +/-    1.97  0.120 / 0.240
G13     236.7          22.3               10.1 +/-    1.41      21.1 +/-    1.41  0.090 / 0.180
G15     270.1          12.2               10.3 +/-    2.42      27.3 +/-    2.42  0.130 / 0.150
G17     6.1            69.4                7.5 +/-    0.55       7.9 +/-    0.55  0.040 / 0.050
G19     276.6          69.1                7.7 +/-    0.47       8.2 +/-    0.47  0.040 / 0.060
G24     315.7          20.9                5.6 +/-    2.74      12.1 +/-    2.74  0.030 / 0.030
G28     67.8           49.6                8.8 +/-    1.56      11.1 +/-    1.56  0.030 / 0.030
G30     154.5          26.8                9.6 +/-    1.43      17.9 +/-    1.43  0.090 / 0.120