PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-08:42:30
G08     311.7          16.9                4.5 +/-    1.69      10.6 +/-    1.69  0.070 / 0.090
G10     333.5          60.2                4.5 +/-    0.38       5.1 +/-    0.38  0.080 / 0.100
G14     219.0          28.0                6.4 +/-    2.62      11.7 +/-    2.62  0.340 / 0.200
G20     73.4           33.5                5.1 +/-    1.53       8.3 +/-    1.53  0.250 / 0.220
G21     135.3          56.0                8.1 +/-    0.24       9.5 +/-    0.24  0.050 / 0.080
G24     72.8           30.0                7.1 +/-    0.95      12.5 +/-    0.95  0.060 / 0.070
G27     272.8          37.3                6.7 +/-    2.47      10.3 +/-    2.47  0.040 / 0.040
G32     224.4          55.0                8.4 +/-    2.15      10.0 +/-    2.15  0.030 / 0.040