PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-02:27:40
G02     59.7           32.2                8.1 +/-    3.00      13.5 +/-    3.00  0.070 / 0.090
G05     57.8           60.2                9.3 +/-    0.53      10.5 +/-    0.53  0.070 / 0.080
G12     184.7          32.9               10.6 +/-    1.11      17.6 +/-    1.11  0.030 / 0.020
G13     128.8          14.8               12.1 +/-    2.46      30.3 +/-    2.46  0.030 / 0.030
G15     164.0          11.8               10.1 +/-    4.22      27.2 +/-    4.22  0.130 / 0.310
G20     218.1          15.8               16.3 +/-    1.83      39.7 +/-    1.83  0.200 / 0.420
G21     270.7          16.6               11.0 +/-    2.34      26.4 +/-    2.34  0.090 / 0.080
G25     238.8          52.3               11.6 +/-    2.45      14.2 +/-    2.45  0.070 / 0.090
G29     327.4          53.3                9.2 +/-    1.02      11.2 +/-    1.02  0.240 / 0.370