PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-12:12:50
G10     299.5          52.3                2.6 +/-    1.41       3.2 +/-    1.41  0.080 / 0.090
G14     211.1          11.9                0.1 +/-   12.47       0.4 +/-   12.47  0.090 / 0.060
G15     45.7           25.2                4.2 +/-    1.93       8.1 +/-    1.93  0.110 / 0.490
G20     70.5           22.1                2.5 +/-    2.04       5.3 +/-    2.04  0.200 / 0.450
G21     104.8          71.1                4.3 +/-    0.66       4.5 +/-    0.66  0.070 / 0.150
G24     96.4           27.2                2.9 +/-    1.06       5.4 +/-    1.06  0.060 / 0.140
G27     297.5          35.5                4.6 +/-    2.02       7.3 +/-    2.02  0.030 / 0.040
G32     211.4          34.5                5.8 +/-    2.10       9.3 +/-    2.10  0.030 / 0.040