PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-02:12:50
G01     124.5          13.4                6.8 +/-    1.98      17.7 +/-    1.98  0.040 / 0.040
G07     68.4           67.3                4.7 +/-    0.49       5.1 +/-    0.49  0.030 / 0.040
G08     47.2           34.7                2.8 +/-    0.48       4.4 +/-    0.48  0.090 / 0.360
G09     176.5          31.6                5.7 +/-    1.74       9.6 +/-    1.74  0.120 / 0.420
G11     112.6          37.4                6.1 +/-    1.11       9.3 +/-    1.11  0.060 / 0.060
G13     320.1          14.6                1.5 +/-    1.59       3.9 +/-    1.59  0.050 / 0.050
G17     199.1          20.2                6.7 +/-    0.97      14.7 +/-    0.97  0.110 / 0.320
G18     97.0           17.9                5.2 +/-    1.80      12.1 +/-    1.80  0.110 / 0.330
G28     278.0          52.7                5.9 +/-    0.86       7.2 +/-    0.86  0.030 / 0.040
G30     334.6          62.2                2.9 +/-    0.68       3.2 +/-    0.68  0.040 / 0.040