PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-20:12:50
G01     65.3           32.1               12.0 +/-    1.37      20.1 +/-    1.37  0.100 / 0.230
G07     140.1          27.1               15.5 +/-    0.53      28.9 +/-    0.53  0.140 / 0.230
G11     51.2           28.2               10.3 +/-    1.59      18.8 +/-    1.59  0.030 / 0.040
G13     268.6          36.6               15.1 +/-    1.28      23.3 +/-    1.28  0.040 / 0.040
G15     298.6          15.9                9.9 +/-    1.40      24.1 +/-    1.40  0.060 / 0.110
G17     240.8          69.4               13.7 +/-    0.55      14.5 +/-    0.55  0.060 / 0.100
G18     45.8           16.0               10.0 +/-    1.46      24.2 +/-    1.46  0.050 / 0.080
G19     228.0          45.1               15.1 +/-    2.02      20.3 +/-    2.02  0.050 / 0.100
G28     28.3           58.0               14.9 +/-    0.93      17.2 +/-    0.93  0.110 / 0.340
G30     139.9          56.0               15.0 +/-    0.34      17.7 +/-    0.34  0.120 / 0.290