PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/01-21:12:50
G01     54.3           28.1               10.4 +/-    0.62      19.0 +/-    0.62  0.090 / 0.340
G06     178.5          20.9               -7.1 +/-   43.21     -15.4 +/-   43.21  0.110 / 0.410
G07     144.8          17.3               13.6 +/-    1.34      32.1 +/-    1.34  0.060 / 0.090
G11     46.4           20.1               10.1 +/-    1.52      22.1 +/-    1.52  0.080 / 0.080
G13     256.0          32.8               12.4 +/-    1.39      20.5 +/-    1.39  0.080 / 0.190
G15     288.4          16.2                9.0 +/-    2.07      21.8 +/-    2.07  0.050 / 0.180
G17     272.6          76.0               11.9 +/-    0.97      12.2 +/-    0.97  0.110 / 0.230
G19     239.4          54.8               11.6 +/-    1.10      13.8 +/-    1.10  0.090 / 0.260
G28     45.8           54.5               11.7 +/-    0.73      14.1 +/-    0.73  0.050 / 0.070
G30     147.0          44.9               14.6 +/-    1.27      19.8 +/-    1.27  0.040 / 0.060