PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-02:42:40
G07     37.2           69.0                3.6 +/-    0.64       3.8 +/-    0.64  0.030 / 0.040
G08     55.1           42.6                2.5 +/-    0.55       3.5 +/-    0.55  0.030 / 0.040
G09     177.1          42.2                6.9 +/-    1.62       9.7 +/-    1.62  0.080 / 0.230
G11     123.7          31.5                4.5 +/-    1.41       7.7 +/-    1.41  0.090 / 0.190
G17     198.2          10.1               -9.0 +/-    7.52     -24.9 +/-    7.52  0.160 / 0.400
G18     107.0          13.0                4.7 +/-    2.20      12.2 +/-    2.20  0.190 / 0.340
G23     161.4          16.6                4.8 +/-    2.47      11.5 +/-    2.47  0.120 / 0.270
G27     39.6           15.4                2.6 +/-    1.14       6.5 +/-    1.14  0.110 / 0.240
G28     263.4          46.9                3.8 +/-    1.39       5.1 +/-    1.39  0.040 / 0.050
G30     323.5          53.4                4.1 +/-    0.88       4.9 +/-    0.88  0.040 / 0.040