PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-09:58:00
G02     199.9          21.2                4.9 +/-    2.25      10.5 +/-    2.25  0.060 / 0.090
G06     175.1          50.7                7.4 +/-    1.00       9.2 +/-    1.00  0.060 / 0.090
G13     228.9          13.4                3.3 +/-    3.40       8.4 +/-    3.40  0.070 / 0.100
G17     24.0           58.7                4.2 +/-    0.63       4.8 +/-    0.63  0.080 / 0.110
G19     327.6          71.3                4.0 +/-    0.67       4.2 +/-    0.67  0.040 / 0.040
G24     311.3          28.1                3.1 +/-    1.77       5.7 +/-    1.77  0.040 / 0.030
G28     88.3           39.3                5.5 +/-    1.05       8.1 +/-    1.05  0.040 / 0.030
G30     156.9          14.6                5.4 +/-    1.46      13.6 +/-    1.46  0.040 / 0.040