PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/15-02:28:10
G02     205.5          45.3                9.3 +/-    0.68      12.4 +/-    0.68  0.130 / 0.190
G06     143.9          76.6                8.6 +/-    0.49       8.8 +/-    0.49  0.180 / 0.240
G12     311.7          21.0                5.4 +/-    2.11      11.5 +/-    2.11  0.040 / 0.040
G17     41.4           45.5                5.0 +/-    1.13       6.7 +/-    1.13  0.040 / 0.050
G19     17.1           60.0                5.6 +/-    0.93       6.3 +/-    0.93  0.070 / 0.140
G24     288.5          41.0               11.9 +/-    2.99      17.1 +/-    2.99  0.080 / 0.160
G28     110.5          25.0                6.2 +/-    1.46      12.2 +/-    1.46  0.030 / 0.020