PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-08:42:50
G01     103.5          26.0                4.5 +/-    1.45       8.5 +/-    1.45  0.030 / 0.040
G07     110.2          55.3                6.2 +/-    0.79       7.3 +/-    0.79  0.030 / 0.040
G08     42.0           20.9                3.6 +/-    2.76       7.8 +/-    2.76  0.050 / 0.080
G09     173.7          11.6                3.9 +/-    3.99      10.5 +/-    3.99  0.060 / 0.080
G11     88.1           44.5                5.6 +/-    0.66       7.7 +/-    0.66  0.290 / 0.380
G13     307.5          31.0                4.7 +/-    1.13       8.1 +/-    1.13  0.310 / 0.410
G17     206.1          37.5                5.4 +/-    1.07       8.3 +/-    1.07  0.080 / 0.130
G18     77.7           24.5                5.3 +/-    1.48      10.5 +/-    1.48  0.080 / 0.140
G28     307.1          58.2                4.1 +/-    1.11       4.7 +/-    1.11  0.030 / 0.020
G30     21.1           78.8                5.5 +/-    1.06       5.6 +/-    1.06  0.030 / 0.020