PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/18-11:12:40
G01     127.8          11.0               -3.7 +/-   30.19     -10.0 +/-   30.19  0.040 / 0.040
G07     50.0           69.6                2.0 +/-    5.89       2.1 +/-    5.89  0.030 / 0.050
G08     50.2           38.5                0.1 +/-   11.04       0.2 +/-   11.04  0.030 / 0.040
G09     176.3          34.8                4.0 +/-    5.11       6.4 +/-    5.11  0.030 / 0.030
G11     117.9          34.9                3.0 +/-    6.79       4.7 +/-    6.79  0.180 / 0.300
G13     321.3          11.0               -4.9 +/-   16.23     -13.3 +/-   16.23  0.130 / 0.340
G17     199.2          15.1                0.7 +/-    6.69       1.6 +/-    6.69  0.110 / 0.230
G18     104.1          16.1                2.6 +/-    7.88       6.4 +/-    7.88  0.100 / 0.280
G28     274.2          52.2                2.5 +/-    4.69       3.1 +/-    4.69  0.120 / 0.430
G30     329.7          58.3                1.2 +/-    3.24       1.3 +/-    3.24  0.120 / 0.440