PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-00:27:50
G02     28.2           59.7                9.7 +/-    0.71      11.0 +/-    0.71  0.030 / 0.040
G05     145.4          57.5               12.7 +/-    0.87      14.8 +/-    0.87  0.030 / 0.030
G06     51.0           19.5                6.5 +/-    0.86      14.5 +/-    0.86  0.030 / 0.050
G12     207.0          73.5                9.7 +/-    1.47      10.1 +/-    1.47  0.030 / 0.040
G19     94.8           14.7               10.4 +/-    0.60      26.1 +/-    0.60  0.030 / 0.050
G25     304.9          48.8               10.1 +/-    1.20      12.9 +/-    1.20  0.030 / 0.050
G29     302.8          22.9                8.4 +/-    1.28      17.3 +/-    1.28  0.040 / 0.060