PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-19:12:50
G01     96.9           29.4               26.5 +/-    0.52      47.0 +/-    0.52  0.050 / 0.060
G07     120.7          44.5               15.0 +/-    1.19      20.4 +/-    1.19  0.040 / 0.070
G08     41.7           12.3                9.5 +/-    1.70      25.3 +/-    1.70  0.040 / 0.070
G11     74.8           41.8               13.9 +/-    0.58      19.7 +/-    0.58  0.040 / 0.060
G13     300.9          34.4               13.2 +/-    1.17      21.2 +/-    1.17  0.030 / 0.040
G17     209.3          47.5               15.8 +/-    2.41      20.5 +/-    2.41  0.030 / 0.030
G18     68.3           23.9               11.4 +/-    0.46      23.0 +/-    0.46  0.060 / 0.130
G19     211.3          21.6               13.3 +/-    0.92      28.1 +/-    0.92  0.060 / 0.130
G28     326.4          61.0               12.4 +/-    0.86      14.0 +/-    0.86  0.080 / 0.170
G30     83.0           78.2               13.1 +/-    0.74      13.4 +/-    0.74  0.060 / 0.190