PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/22-07:57:40
G01     98.0           29.5                7.4 +/-    0.82      13.1 +/-    0.82  0.030 / 0.040
G07     118.9          50.1                9.7 +/-    1.42      12.2 +/-    1.42  0.030 / 0.030
G08     41.6           11.0                3.8 +/-    1.15      10.4 +/-    1.15  0.050 / 0.060
G11     75.2           41.3                8.7 +/-    0.73      12.4 +/-    0.73  0.050 / 0.070
G13     301.6          33.7                6.5 +/-    1.84      10.6 +/-    1.84  0.090 / 0.210
G17     209.1          49.0                8.8 +/-    2.62      11.2 +/-    2.62  0.110 / 0.160
G18     68.8           23.9                8.0 +/-    0.91      16.1 +/-    0.91  0.080 / 0.150
G19     212.1          17.6                4.6 +/-    2.19      10.8 +/-    2.19  0.070 / 0.120
G28     332.3          61.7                5.6 +/-    1.11       6.3 +/-    1.11  0.060 / 0.140
G30     62.7           80.5                8.9 +/-    0.62       9.0 +/-    0.62  0.050 / 0.140