PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/21-23:58:10
G01     220.3          11.2                7.4 +/-    1.88      20.1 +/-    1.88  0.100 / 0.230
G03     263.8          69.9                6.1 +/-    0.69       6.4 +/-    0.69  0.110 / 0.230
G09     300.2          16.1                5.2 +/-    2.14      12.6 +/-    2.14  0.170 / 0.330
G14     93.9           18.6                5.0 +/-    2.67      11.4 +/-    2.67  0.200 / 0.410
G16     137.6          52.8                7.7 +/-    0.66       9.4 +/-    0.66  0.040 / 0.030
G22     204.0          63.3                7.4 +/-    0.36       8.1 +/-    0.36  0.040 / 0.040
G23     312.4          41.7                6.2 +/-    0.82       8.8 +/-    0.82  0.050 / 0.050
G26     83.4           54.8                5.8 +/-    0.81       6.9 +/-    0.81  0.050 / 0.050
G31     48.2           27.3                2.7 +/-    3.28       4.9 +/-    3.28  0.040 / 0.030