PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-08:28:00
G01     125.3          13.0                4.0 +/-    3.01      10.4 +/-    3.01  0.030 / 0.050
G07     61.8           68.7                5.2 +/-    0.36       5.6 +/-    0.36  0.040 / 0.040
G08     47.9           35.8                2.6 +/-    1.21       4.1 +/-    1.21  0.120 / 0.390
G09     173.9          28.7                6.3 +/-    1.47      11.4 +/-    1.47  0.120 / 0.390
G11     114.2          36.8                6.3 +/-    1.06       9.8 +/-    1.06  0.030 / 0.040
G13     320.4          13.8                1.5 +/-    1.14       3.9 +/-    1.14  0.030 / 0.040
G17     199.5          18.7                3.7 +/-    1.34       8.3 +/-    1.34  0.120 / 0.330
G18     100.1          17.7                4.6 +/-    1.87      10.7 +/-    1.87  0.140 / 0.370
G28     278.4          53.3                5.9 +/-    0.61       7.2 +/-    0.61  0.090 / 0.310
G30     333.2          61.1                2.7 +/-    0.69       3.0 +/-    0.69  0.090 / 0.320