PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-14:43:10
G01     103.9          27.1                9.8 +/-    1.24      18.2 +/-    1.24  0.030 / 0.020
G07     111.5          55.9               11.4 +/-    0.35      13.4 +/-    0.35  0.020 / 0.020
G08     41.7           17.4                8.3 +/-    1.60      19.5 +/-    1.60  0.030 / 0.030
G11     84.0           42.6               11.3 +/-    0.71      15.8 +/-    0.71  0.030 / 0.040
G13     306.9          30.6                9.5 +/-    1.04      16.4 +/-    1.04  0.080 / 0.140
G17     207.3          40.7               11.9 +/-    1.26      17.2 +/-    1.26  0.070 / 0.130
G18     76.7           24.5               10.5 +/-    1.78      20.7 +/-    1.78  0.080 / 0.100
G19     210.4          13.4               -1.6 +/-    6.88      -4.3 +/-    6.88  0.070 / 0.150
G28     324.0          61.4                9.3 +/-    0.83      10.5 +/-    0.83  0.080 / 0.110
G30     35.3           79.4               10.5 +/-    1.04      10.6 +/-    1.04  0.060 / 0.130