PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/09-07:57:50
G01     121.3          16.1                5.8 +/-    2.25      13.9 +/-    2.25  0.030 / 0.030
G07     75.9           66.9                5.9 +/-    0.60       6.4 +/-    0.60  0.030 / 0.040
G08     45.3           31.6                3.3 +/-    0.43       5.5 +/-    0.43  0.030 / 0.030
G09     173.5          23.7                5.4 +/-    1.07      10.9 +/-    1.07  0.020 / 0.030
G11     108.2          39.1                6.8 +/-    0.57      10.0 +/-    0.57  0.120 / 0.240
G13     318.7          17.7                2.6 +/-    1.28       6.1 +/-    1.28  0.110 / 0.200
G17     200.3          23.8                4.4 +/-    1.11       8.9 +/-    1.11  0.090 / 0.240
G18     95.0           19.7                5.6 +/-    0.78      12.3 +/-    0.78  0.100 / 0.240
G28     286.3          55.5                5.6 +/-    0.97       6.6 +/-    0.97  0.080 / 0.170
G30     339.2          65.2                3.9 +/-    0.63       4.3 +/-    0.63  0.080 / 0.160