PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/21-23:28:10
G01     44.3           20.5                8.1 +/-    2.91      17.6 +/-    2.91  0.180 / 0.310
G06     179.0          28.9               10.1 +/-    1.92      18.1 +/-    1.92  0.240 / 0.220
G13     242.2          26.4                9.7 +/-    1.93      18.4 +/-    1.93  0.080 / 0.370
G15     275.9          14.1                7.7 +/-    1.37      19.5 +/-    1.37  0.080 / 0.210
G17     352.1          74.3                7.8 +/-    0.44       8.1 +/-    0.44  0.060 / 0.050
G19     260.2          65.4                9.1 +/-    1.01       9.9 +/-    1.01  0.050 / 0.050
G24     317.5          15.8                6.5 +/-    1.70      15.9 +/-    1.70  0.030 / 0.040
G28     58.7           52.4                8.6 +/-    0.66      10.5 +/-    0.66  0.040 / 0.040
G30     152.6          33.2               10.2 +/-    1.50      16.8 +/-    1.50  0.050 / 0.090