PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-02:57:40
G01     124.5          13.4                5.8 +/-    2.03      14.9 +/-    2.03  0.030 / 0.030
G07     67.7           67.5                5.4 +/-    0.56       5.8 +/-    0.56  0.030 / 0.030
G08     47.2           34.6                3.5 +/-    1.15       5.5 +/-    1.15  0.090 / 0.110
G09     176.2          31.2                6.1 +/-    1.64      10.4 +/-    1.64  0.150 / 0.100
G11     112.7          37.3               -1.4 +/-    0.76      -2.2 +/-    0.76  0.100 / 0.350
G13     320.1          14.5                2.6 +/-    3.27       6.6 +/-    3.27  0.110 / 0.370
G17     199.1          20.2                6.9 +/-    1.84      15.1 +/-    1.84  0.040 / 0.030
G28     278.2          52.8                4.5 +/-    3.52       5.5 +/-    3.52  0.040 / 0.030
G30     334.4          62.0                3.9 +/-    0.31       4.3 +/-    0.31  0.070 / 0.100