PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-07:28:00
G08     313.3          17.2                3.5 +/-    1.62       8.2 +/-    1.62  0.040 / 0.060
G10     325.6          59.1                6.0 +/-    0.68       6.8 +/-    0.68  0.040 / 0.050
G14     215.4          27.2                4.8 +/-    1.84       8.9 +/-    1.84  0.030 / 0.040
G15     46.2           13.0                1.7 +/-    1.51       4.5 +/-    1.51  0.050 / 0.050
G20     29.2           61.9                4.7 +/-    0.64       5.3 +/-    0.64  0.070 / 0.100
G21     129.5          59.8                6.3 +/-    0.41       7.2 +/-    0.41  0.070 / 0.080
G24     78.3           29.7                5.5 +/-    0.87       9.8 +/-    0.87  0.090 / 0.210
G27     282.7          37.4                6.2 +/-    0.66       9.4 +/-    0.66  0.100 / 0.210
G32     219.5          43.1                9.0 +/-    0.93      12.4 +/-    0.93  0.080 / 0.110