PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/18-19:13:10
G10     275.8          43.2                7.7 +/-    0.95      10.6 +/-    0.95  0.120 / 0.160
G13     38.9           12.0                7.7 +/-    1.85      20.6 +/-    1.85  0.100 / 0.120
G15     54.3           46.1                6.5 +/-    0.73       8.7 +/-    0.73  0.030 / 0.030
G20     313.4          63.2                8.0 +/-    0.74       8.9 +/-    0.74  0.040 / 0.040
G21     30.2           75.8                8.7 +/-    0.33       8.9 +/-    0.33  0.130 / 0.230
G24     110.5          18.8               11.0 +/-    1.69      24.8 +/-    1.69  0.150 / 0.360
G27     315.4          23.3                6.3 +/-    1.17      12.7 +/-    1.17  0.130 / 0.330
G29     168.3          23.3                9.6 +/-    3.19      19.4 +/-    3.19  0.130 / 0.230
G32     205.4          16.6               11.7 +/-    4.00      27.9 +/-    4.00  0.040 / 0.060