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               12.9 +/-    0.67      21.6 +/-    0.67  0.100 / 0.430
G07     140.1          27.1               16.8 +/-    1.70      31.3 +/-    1.70  0.110 / 0.370
G11     51.2           28.2               10.4 +/-    0.41      19.0 +/-    0.41  0.070 / 0.200
G13     268.6          36.6               15.4 +/-    1.09      23.8 +/-    1.09  0.070 / 0.190
G15     298.6          15.9                9.7 +/-    2.61      23.7 +/-    2.61  0.050 / 0.080
G17     240.8          69.4               15.2 +/-    0.83      16.2 +/-    0.83  0.050 / 0.090
G18     45.8           16.0               10.0 +/-    1.67      24.2 +/-    1.67  0.030 / 0.050
G19     228.0          45.1               17.7 +/-    0.57      23.8 +/-    0.57  0.030 / 0.060
G28     28.3           58.0               12.2 +/-    0.44      14.1 +/-    0.44  0.080 / 0.120
G30     139.9          56.0               15.5 +/-    0.86      18.3 +/-    0.86  0.070 / 0.140