PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-09:57:50
G01     293.0          39.6               10.2 +/-    4.89      15.0 +/-    4.89  0.040 / 0.040
G03     311.6          16.9                4.3 +/-    3.02      10.1 +/-    3.02  0.040 / 0.040
G10     118.5          30.0                6.1 +/-    1.40      10.7 +/-    1.40  0.050 / 0.090
G11     267.9          26.2                3.9 +/-    1.78       7.4 +/-    1.78  0.070 / 0.090
G14     13.1           62.3                4.1 +/-    0.95       4.5 +/-    0.95  0.060 / 0.070
G18     256.5          48.0                5.5 +/-    8.40       7.1 +/-    8.40  0.070 / 0.070
G22     314.3          40.9                3.7 +/-    1.08       5.2 +/-    1.08  0.130 / 0.240
G25     69.0           19.0                3.0 +/-    1.86       6.8 +/-    1.86  0.100 / 0.230
G31     123.8          78.2                5.8 +/-    0.38       5.9 +/-    0.38  0.100 / 0.180
G32     50.9           41.6                3.9 +/-    1.43       5.5 +/-    1.43  0.080 / 0.210