PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-10:43:00
G01     105.2          26.3                5.5 +/-    1.10      10.5 +/-    1.10  0.090 / 0.150
G07     110.3          54.8                5.6 +/-    0.70       6.6 +/-    0.70  0.070 / 0.130
G08     41.7           17.3                3.2 +/-    1.72       7.6 +/-    1.72  0.020 / 0.040
G09     173.4          10.8                4.6 +/-    5.58      12.7 +/-    5.58  0.020 / 0.040
G11     85.0           41.2                4.5 +/-    1.10       6.5 +/-    1.10  0.250 / 0.390
G13     309.8          27.9                1.6 +/-    1.11       2.9 +/-    1.11  0.180 / 0.370
G17     206.0          42.0                5.3 +/-    0.85       7.5 +/-    0.85  0.020 / 0.030
G19     209.3          16.0                4.9 +/-    2.29      11.8 +/-    2.29  0.020 / 0.020
G28     322.2          61.2                2.8 +/-    0.54       3.1 +/-    0.54  0.110 / 0.190
G30     24.7           78.3                4.1 +/-    1.09       4.2 +/-    1.09  0.110 / 0.150