PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-16:42:50
G01     125.5          13.0               11.0 +/-    2.96      28.8 +/-    2.96  0.040 / 0.060
G07     57.9           69.4               11.4 +/-    0.55      12.0 +/-    0.55  0.040 / 0.050
G08     49.8           39.5               10.7 +/-    0.76      15.7 +/-    0.76  0.020 / 0.040
G09     177.8          33.7               12.4 +/-    1.77      20.2 +/-    1.77  0.030 / 0.070
G11     116.8          36.3               11.3 +/-    0.98      17.6 +/-    0.98  0.040 / 0.040
G13     320.6          13.2               11.7 +/-    2.92      30.4 +/-    2.92  0.040 / 0.040
G17     201.0          14.8               11.8 +/-    1.08      29.5 +/-    1.08  0.040 / 0.060
G18     102.2          17.6               12.0 +/-    1.49      28.1 +/-    1.49  0.050 / 0.050
G28     279.7          54.0               13.5 +/-    1.30      16.2 +/-    1.30  0.140 / 0.270
G30     336.1          62.6               10.5 +/-    0.56      11.7 +/-    0.56  0.140 / 0.310