PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/11-09:27:50
G01     43.5           19.2                2.5 +/-    3.20       5.7 +/-    3.20  0.050 / 0.060
G06     178.5          32.1                6.3 +/-    1.37      10.5 +/-    1.37  0.050 / 0.060
G13     242.9          24.8                5.6 +/-    1.48      11.1 +/-    1.48  0.330 / 0.310
G15     274.7          13.8                3.0 +/-    2.04       7.5 +/-    2.04  0.240 / 0.220
G17     357.5          72.6                4.3 +/-    0.57       4.4 +/-    0.57  0.030 / 0.020
G19     269.2          68.3                4.3 +/-    0.54       4.6 +/-    0.54  0.030 / 0.020
G24     318.2          14.5                1.4 +/-    3.26       3.5 +/-    3.26  0.170 / 0.190
G28     66.9           48.3                3.9 +/-    2.10       5.0 +/-    2.10  0.120 / 0.160
G30     153.1          31.4                5.6 +/-    0.86       9.5 +/-    0.86  0.180 / 0.200