PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-09:12:50
G01     103.0          26.3                3.6 +/-    1.17       6.8 +/-    1.17  0.030 / 0.040
G07     111.2          54.6                6.0 +/-    0.65       7.2 +/-    0.65  0.040 / 0.040
G08     41.9           20.7                3.6 +/-    2.93       7.8 +/-    2.93  0.060 / 0.070
G09     173.8          11.3                5.1 +/-    1.12      13.8 +/-    1.12  0.080 / 0.080
G11     87.0           44.4                6.1 +/-    1.04       8.3 +/-    1.04  0.330 / 0.470
G13     307.0          31.3                5.1 +/-    1.47       8.7 +/-    1.47  0.240 / 0.480
G17     206.4          37.9                7.2 +/-    0.87      10.8 +/-    0.87  0.220 / 0.240
G18     77.0           24.5                5.3 +/-    1.62      10.4 +/-    1.62  0.150 / 0.160
G28     308.5          58.5                4.3 +/-    0.97       5.0 +/-    0.97  0.040 / 0.030
G30     25.6           79.2                5.8 +/-    1.37       5.8 +/-    1.37  0.020 / 0.020