PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/03-23:12:40
G02     237.1          74.7               10.4 +/-    0.54      10.7 +/-    0.54  0.170 / 0.440
G05     171.7          14.8               16.0 +/-    2.04      39.9 +/-    2.04  0.180 / 0.440
G06     40.9           63.2                9.4 +/-    0.70      10.4 +/-    0.70  0.040 / 0.030
G12     320.6          46.9                8.8 +/-    1.38      11.6 +/-    1.38  0.030 / 0.050
G17     68.9           23.2                9.2 +/-    0.76      18.8 +/-    0.76  0.060 / 0.070
G19     54.8           39.5               10.1 +/-    0.52      14.8 +/-    0.52  0.050 / 0.070
G24     246.4          35.8               12.4 +/-    1.15      19.4 +/-    1.15  0.070 / 0.060
G25     315.9          10.7              -12.7 +/-   32.98     -34.9 +/-   32.98  0.050 / 0.060