PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-09:27:50
G01     104.2          27.0                5.2 +/-    1.23       9.8 +/-    1.23  0.040 / 0.040
G07     111.7          55.2                6.4 +/-    0.41       7.7 +/-    0.41  0.040 / 0.030
G08     41.5           16.0                2.4 +/-    2.28       5.8 +/-    2.28  0.030 / 0.030
G11     83.1           42.4                5.5 +/-    0.76       7.8 +/-    0.76  0.030 / 0.020
G13     307.0          30.7                4.9 +/-    1.44       8.4 +/-    1.44  0.070 / 0.150
G17     206.4          42.6                6.6 +/-    0.58       9.2 +/-    0.58  0.090 / 0.140
G18     75.6           24.1                4.3 +/-    1.60       8.5 +/-    1.60  0.060 / 0.140
G19     210.4          11.8               -0.9 +/-    5.52      -2.3 +/-    5.52  0.080 / 0.140
G28     321.5          61.1                4.2 +/-    0.74       4.7 +/-    0.74  0.120 / 0.140
G30     28.2           79.3                5.0 +/-    0.39       5.1 +/-    0.39  0.120 / 0.150