PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/16-09:12:40
G01     42.1           17.5                3.5 +/-    2.17       8.1 +/-    2.17  0.040 / 0.050
G06     178.2          34.5                6.7 +/-    1.44      10.7 +/-    1.44  0.040 / 0.070
G13     240.7          23.2                6.8 +/-    1.68      13.9 +/-    1.68  0.300 / 0.280
G15     272.3          13.1                4.1 +/-    1.57      10.8 +/-    1.57  0.350 / 0.250
G17     2.6            70.7                6.1 +/-    0.31       6.4 +/-    0.31  0.080 / 0.240
G19     276.2          69.6                5.4 +/-    0.51       5.7 +/-    0.51  0.080 / 0.240
G24     317.6          16.6                2.7 +/-    3.88       6.5 +/-    3.88  0.030 / 0.020
G28     70.2           47.1                5.8 +/-    0.96       7.6 +/-    0.96  0.030 / 0.020
G30     153.8          28.8                7.5 +/-    0.73      13.5 +/-    0.73  0.090 / 0.090