PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-10:28:00
G01     104.9          26.6                5.5 +/-    1.02      10.4 +/-    1.02  0.080 / 0.160
G07     110.6          55.9                5.9 +/-    0.56       6.9 +/-    0.56  0.060 / 0.150
G08     41.5           16.8                3.0 +/-    1.06       7.1 +/-    1.06  0.030 / 0.030
G11     84.2           42.5                5.9 +/-    0.84       8.3 +/-    0.84  0.020 / 0.040
G13     307.6          30.3                2.8 +/-    0.93       4.8 +/-    0.93  0.130 / 0.180
G17     206.2          41.6                7.8 +/-    0.96      11.0 +/-    0.96  0.110 / 0.210
G18     76.6           24.2                4.4 +/-    0.70       8.7 +/-    0.70  0.070 / 0.190
G19     210.3          10.9                2.8 +/-   17.73       7.8 +/-   17.73  0.070 / 0.170
G28     320.5          61.1                4.9 +/-    0.64       5.5 +/-    0.64  0.030 / 0.050
G30     25.5           79.0                6.0 +/-    0.47       6.1 +/-    0.47  0.040 / 0.050