PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-13:42:20
G08     300.0          21.2                5.3 +/-    1.33      11.3 +/-    1.33  0.070 / 0.080
G10     357.1          62.7                4.8 +/-    1.00       5.4 +/-    1.00  0.080 / 0.070
G14     226.5          41.1                7.7 +/-    1.88      11.0 +/-    1.88  0.040 / 0.060
G21     143.7          42.2                7.1 +/-    0.82      10.0 +/-    0.82  0.040 / 0.060
G24     60.7           27.7                4.3 +/-    1.77       8.0 +/-    1.77  0.100 / 0.130
G27     257.9          33.5                6.1 +/-    1.32       9.9 +/-    1.32  0.080 / 0.150
G32     239.1          64.9                7.1 +/-    0.95       7.7 +/-    0.95  0.060 / 0.090