PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/15-09:27:50
G01     64.3           31.8                5.2 +/-    0.74       8.8 +/-    0.74  0.050 / 0.040
G07     140.3          24.8                6.9 +/-    1.93      13.6 +/-    1.93  0.040 / 0.050
G11     49.3           25.5                5.6 +/-    1.08      10.8 +/-    1.08  0.040 / 0.140
G13     266.8          36.7                8.1 +/-    1.51      12.5 +/-    1.51  0.050 / 0.140
G15     301.0          14.3                2.1 +/-    1.20       5.4 +/-    1.20  0.050 / 0.090
G17     249.4          76.0                8.6 +/-    0.64       8.8 +/-    0.64  0.050 / 0.070
G18     43.5           13.8                2.3 +/-    1.15       6.0 +/-    1.15  0.080 / 0.130
G19     228.2          43.3                8.6 +/-    1.27      11.9 +/-    1.27  0.070 / 0.110
G28     27.1           58.4                5.4 +/-    0.43       6.2 +/-    0.43  0.090 / 0.280
G30     141.2          58.1                7.6 +/-    0.92       8.8 +/-    0.92  0.090 / 0.190