PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/01-02:57:40
G01     65.3           32.0                5.7 +/-    1.21       9.6 +/-    1.21  0.030 / 0.040
G07     140.0          26.8                8.6 +/-    1.25      16.2 +/-    1.25  0.040 / 0.040
G11     51.9           29.0                4.6 +/-    1.43       8.2 +/-    1.43  0.050 / 0.070
G13     269.5          36.4                7.7 +/-    1.35      12.0 +/-    1.35  0.050 / 0.070
G15     297.5          16.5                5.1 +/-    1.40      12.3 +/-    1.40  0.140 / 0.230
G17     243.4          72.2                7.7 +/-    0.30       8.0 +/-    0.30  0.100 / 0.200
G19     228.3          47.1                9.0 +/-    1.99      11.7 +/-    1.99  0.050 / 0.110
G28     29.1           57.8                5.3 +/-    1.60       6.1 +/-    1.60  0.050 / 0.130
G30     139.4          53.0               10.1 +/-    0.78      12.3 +/-    0.78  0.030 / 0.020