PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-12:58:00
G01     95.4           30.4                6.8 +/-    0.97      11.8 +/-    0.97  0.030 / 0.030
G07     121.0          49.4                7.0 +/-    0.76       8.9 +/-    0.76  0.030 / 0.030
G08     41.9           9.8                 6.0 +/-    2.83      16.9 +/-    2.83  0.040 / 0.050
G11     72.9           40.7                6.9 +/-    1.42       9.9 +/-    1.42  0.030 / 0.030
G13     299.4          34.6                5.7 +/-    1.42       9.1 +/-    1.42  0.060 / 0.100
G17     210.9          50.1                7.3 +/-    0.83       9.2 +/-    0.83  0.070 / 0.110
G18     68.0           24.3                6.5 +/-    1.38      12.8 +/-    1.38  0.070 / 0.100
G19     213.0          19.7                6.1 +/-    2.97      13.6 +/-    2.97  0.070 / 0.100
G28     339.4          61.9                5.4 +/-    0.63       6.0 +/-    0.63  0.070 / 0.110
G30     77.9           79.9                6.1 +/-    0.30       6.2 +/-    0.30  0.070 / 0.110