PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-02:13:00
G02     55.8           35.5                9.9 +/-    0.50      15.6 +/-    0.50  0.050 / 0.070
G05     65.6           64.0               12.1 +/-    0.60      13.3 +/-    0.60  0.070 / 0.080
G12     185.6          38.0               15.9 +/-    1.46      23.9 +/-    1.46  0.030 / 0.030
G13     132.5          11.6               14.4 +/-    2.36      38.9 +/-    2.36  0.030 / 0.040
G20     216.5          11.0                6.8 +/-   34.06      18.6 +/-   34.06  0.050 / 0.090
G21     266.9          13.6               13.6 +/-    1.23      35.0 +/-    1.23  0.060 / 0.090
G25     246.9          55.2               14.3 +/-    0.72      17.1 +/-    0.72  0.040 / 0.050
G29     324.3          48.8               12.7 +/-    1.60      16.2 +/-    1.60  0.060 / 0.050