PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/17-02:42:50
G01     106.2          26.0                5.9 +/-    1.61      11.3 +/-    1.61  0.040 / 0.040
G07     108.1          57.5                5.2 +/-    0.48       6.0 +/-    0.48  0.040 / 0.040
G08     42.0           20.4                3.1 +/-    2.10       6.6 +/-    2.10  0.030 / 0.030
G09     175.3          13.7                5.6 +/-    0.93      14.5 +/-    0.93  0.030 / 0.040
G11     90.0           42.9                7.7 +/-    0.95      10.7 +/-    0.95  0.100 / 0.120
G13     309.7          28.2                2.6 +/-    1.25       4.6 +/-    1.25  0.240 / 0.190
G17     206.4          38.6                7.3 +/-    0.88      10.9 +/-    0.88  0.070 / 0.060
G19     209.2          14.5                4.1 +/-    2.27      10.4 +/-    2.27  0.060 / 0.060
G28     321.1          61.3                3.5 +/-    0.78       4.0 +/-    0.78  0.090 / 0.120
G30     44.7           78.2                3.7 +/-    1.12       3.7 +/-    1.12  0.070 / 0.120