PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-19:12:50
G01     106.3          26.0               13.5 +/-    1.74      25.8 +/-    1.74  0.160 / 0.210
G07     107.8          58.1               12.9 +/-    0.82      14.9 +/-    0.82  0.100 / 0.320
G08     42.2           22.3                8.8 +/-    2.51      18.4 +/-    2.51  0.030 / 0.040
G09     175.0          13.2               13.6 +/-    2.20      35.2 +/-    2.20  0.030 / 0.040
G11     89.4           43.2               16.4 +/-    1.17      22.7 +/-    1.17  0.030 / 0.030
G13     309.1          28.9                8.9 +/-    1.40      15.9 +/-    1.40  0.030 / 0.030
G17     207.2          35.1               13.2 +/-    1.13      20.9 +/-    1.13  0.100 / 0.140
G18     80.0           24.5               14.2 +/-    1.80      28.0 +/-    1.80  0.090 / 0.150
G28     320.1          61.2               10.6 +/-    0.56      11.9 +/-    0.56  0.040 / 0.060
G30     33.9           78.5               11.8 +/-    1.55      12.0 +/-    1.55  0.040 / 0.050