PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/26-07:27:50
G01     67.4           32.4                3.9 +/-    0.74       6.5 +/-    0.74  0.050 / 0.040
G07     139.0          27.5                6.5 +/-    1.43      12.0 +/-    1.43  0.040 / 0.040
G11     52.0           28.3                2.9 +/-    1.39       5.3 +/-    1.39  0.050 / 0.090
G13     272.5          36.6                4.3 +/-    1.75       6.6 +/-    1.75  0.070 / 0.120
G15     299.7          16.1                2.1 +/-    2.23       5.0 +/-    2.23  0.160 / 0.280
G17     241.1          73.0                5.4 +/-    0.43       5.6 +/-    0.43  0.110 / 0.280
G19     226.8          46.2                5.1 +/-    2.73       6.7 +/-    2.73  0.030 / 0.020
G28     25.9           58.2                6.0 +/-    0.92       6.9 +/-    0.92  0.020 / 0.020
G30     137.8          58.0                6.8 +/-    1.06       7.9 +/-    1.06  0.060 / 0.080