PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/26-02:12:40
G07     47.0           68.9                5.1 +/-    0.34       5.4 +/-    0.34  0.030 / 0.040
G08     52.3           40.4                3.9 +/-    0.95       5.6 +/-    0.95  0.030 / 0.040
G09     177.1          39.2                8.3 +/-    0.94      12.3 +/-    0.94  0.160 / 0.290
G11     120.7          33.4                7.8 +/-    0.65      12.8 +/-    0.65  0.130 / 0.300
G17     198.3          13.0                4.1 +/-    2.47      10.7 +/-    2.47  0.080 / 0.130
G18     104.0          14.5                8.2 +/-    2.00      20.5 +/-    2.00  0.100 / 0.130
G23     161.5          13.6                7.6 +/-    3.86      19.6 +/-    3.86  0.080 / 0.070
G27     38.7           13.1                1.6 +/-    1.05       4.1 +/-    1.05  0.050 / 0.090
G28     267.4          48.6                5.3 +/-    1.36       6.8 +/-    1.36  0.050 / 0.040
G30     326.6          56.0                3.0 +/-    0.48       3.6 +/-    0.48  0.040 / 0.050