PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-07:27:50
G01     261.9          39.3                6.0 +/-    0.73       8.9 +/-    0.73  0.050 / 0.050
G03     316.5          35.1                3.3 +/-    1.35       5.2 +/-    1.35  0.040 / 0.060
G10     133.4          11.3                4.3 +/-    2.17      11.6 +/-    2.17  0.060 / 0.090
G11     244.3          16.8                4.8 +/-    2.55      11.4 +/-    2.55  0.060 / 0.090
G14     48.4           48.1                3.8 +/-    0.48       4.8 +/-    0.48  0.140 / 0.390
G18     228.0          34.3                9.1 +/-    1.27      14.7 +/-    1.27  0.160 / 0.310
G22     311.7          59.3                5.4 +/-    0.73       6.2 +/-    0.73  0.060 / 0.080
G25     46.4           14.2               -0.1 +/-    1.20      -0.2 +/-    1.20  0.060 / 0.090
G31     45.3           64.8                4.3 +/-    0.41       4.7 +/-    0.41  0.150 / 0.320
G32     70.9           26.7                3.4 +/-    0.99       6.4 +/-    0.99  0.150 / 0.220