PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/04-13:43:10
G01     86.0           32.6                7.5 +/-    1.50      12.5 +/-    1.50  0.050 / 0.060
G07     128.6          42.3                9.5 +/-    1.03      13.2 +/-    1.03  0.040 / 0.050
G11     63.8           37.6                6.6 +/-    0.58      10.1 +/-    0.58  0.090 / 0.110
G13     290.2          37.1                8.9 +/-    1.68      13.6 +/-    1.68  0.080 / 0.120
G17     217.1          58.0                9.0 +/-    0.86      10.4 +/-    0.86  0.060 / 0.110
G18     59.8           22.8                5.8 +/-    0.56      12.0 +/-    0.56  0.060 / 0.090
G19     216.5          27.2                6.6 +/-    0.97      12.2 +/-    0.97  0.030 / 0.040
G28     355.6          61.5                7.6 +/-    1.40       8.5 +/-    1.40  0.020 / 0.030
G30     113.0          74.8                8.5 +/-    0.35       8.7 +/-    0.35  0.050 / 0.060