PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-09:42:50
G01     73.9           33.2                4.7 +/-    0.69       7.7 +/-    0.69  0.030 / 0.030
G07     135.8          32.4                7.5 +/-    0.83      12.5 +/-    0.83  0.040 / 0.040
G11     54.6           31.4                3.2 +/-    0.68       5.5 +/-    0.68  0.060 / 0.080
G13     277.4          38.1                5.1 +/-    1.58       7.7 +/-    1.58  0.040 / 0.090
G15     308.4          12.3                3.3 +/-    1.62       8.8 +/-    1.62  0.050 / 0.120
G17     229.3          68.9                5.6 +/-    0.71       6.0 +/-    0.71  0.050 / 0.140
G18     49.7           18.3                1.8 +/-    1.48       4.1 +/-    1.48  0.240 / 0.290
G19     222.1          35.5                6.6 +/-    1.31      10.4 +/-    1.31  0.060 / 0.090
G28     12.5           60.3                3.2 +/-    0.43       3.6 +/-    0.43  0.060 / 0.080
G30     132.5          66.3                5.3 +/-    0.68       5.7 +/-    0.68  0.060 / 0.100