PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/01-02:57:50
G01     65.3           32.0                5.4 +/-    0.37       9.1 +/-    0.37  0.100 / 0.240
G07     140.0          26.8                9.3 +/-    1.28      17.5 +/-    1.28  0.100 / 0.240
G11     51.9           29.0                3.9 +/-    1.19       7.0 +/-    1.19  0.040 / 0.050
G13     269.5          36.4                7.7 +/-    1.32      11.8 +/-    1.32  0.040 / 0.050
G15     297.5          16.5                5.0 +/-    1.61      12.1 +/-    1.61  0.050 / 0.080
G17     243.4          72.2                8.2 +/-    0.73       8.6 +/-    0.73  0.050 / 0.070
G19     228.3          47.1                9.8 +/-    1.24      12.8 +/-    1.24  0.030 / 0.030
G28     29.1           57.8                3.9 +/-    0.55       4.5 +/-    0.55  0.030 / 0.030
G30     139.4          53.0                9.4 +/-    0.76      11.4 +/-    0.76  0.080 / 0.140