PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-02:42:40
G01     111.7          23.0                7.9 +/-    1.79      16.2 +/-    1.79  0.040 / 0.060
G07     98.6           61.6                6.6 +/-    0.73       7.4 +/-    0.73  0.040 / 0.070
G08     42.8           25.1                4.3 +/-    2.31       8.4 +/-    2.31  0.030 / 0.040
G09     176.3          18.8                8.0 +/-    1.17      18.1 +/-    1.17  0.030 / 0.030
G11     97.8           42.2                7.9 +/-    0.62      11.2 +/-    0.62  0.130 / 0.150
G13     313.7          24.5                4.4 +/-    1.34       8.7 +/-    1.34  0.100 / 0.080
G17     204.2          33.0               10.2 +/-    2.23      16.8 +/-    2.23  0.110 / 0.090
G28     309.9          60.2                6.1 +/-    1.12       6.9 +/-    1.12  0.070 / 0.080
G30     18.4           76.1                6.2 +/-    1.24       6.4 +/-    1.24  0.130 / 0.170