PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/11-10:42:50
G01     63.7           31.5                5.1 +/-    0.67       8.7 +/-    0.67  0.070 / 0.100
G06     182.2          10.7              -10.4 +/-   35.28     -28.7 +/-   35.28  0.050 / 0.090
G07     140.5          23.7                6.6 +/-    1.43      13.3 +/-    1.43  0.060 / 0.140
G11     49.6           24.9                3.8 +/-    0.96       7.5 +/-    0.96  0.070 / 0.150
G13     269.0          35.8                6.8 +/-    1.64      10.6 +/-    1.64  0.030 / 0.060
G15     297.7          16.1                4.5 +/-    2.08      10.9 +/-    2.08  0.030 / 0.060
G17     252.0          76.3                6.4 +/-    0.76       6.6 +/-    0.76  0.020 / 0.030
G19     229.7          49.5                7.0 +/-    0.75       8.9 +/-    0.75  0.030 / 0.020
G28     31.0           57.4                3.7 +/-    0.77       4.4 +/-    0.77  0.110 / 0.340
G30     140.7          56.5                8.4 +/-    0.47       9.8 +/-    0.47  0.100 / 0.310