PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-20:42:40
G01     42.4           18.1               10.4 +/-    0.60      24.1 +/-    0.60  0.100 / 0.210
G06     174.7          37.5               18.6 +/-    1.69      28.2 +/-    1.69  0.120 / 0.200
G13     239.8          23.5               17.2 +/-    1.15      34.7 +/-    1.15  0.060 / 0.120
G15     273.5          12.9               15.9 +/-    1.11      41.6 +/-    1.11  0.090 / 0.150
G17     346.0          73.6               14.8 +/-    0.80      15.4 +/-    0.80  0.040 / 0.070
G19     268.5          66.6               15.6 +/-    0.68      16.9 +/-    0.68  0.040 / 0.070
G24     317.2          17.6               11.5 +/-    1.91      26.8 +/-    1.91  0.130 / 0.210
G28     68.9           47.8               13.3 +/-    0.38      17.2 +/-    0.38  0.110 / 0.200
G30     153.8          29.1               16.9 +/-    1.39      30.2 +/-    1.39  0.080 / 0.110