PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-05:12:50
G01     319.8          15.7                1.1 +/-   28.05       2.8 +/-   28.05  0.180 / 0.300
G08     259.9          14.4                9.3 +/-    0.84      23.5 +/-    0.84  0.230 / 0.330
G10     75.7           54.5                5.7 +/-    0.45       6.8 +/-    0.45  0.030 / 0.070
G11     305.3          21.9                4.5 +/-    1.44       9.4 +/-    1.44  0.030 / 0.050
G14     283.1          68.2                7.7 +/-    0.64       8.2 +/-    0.64  0.040 / 0.040
G18     307.0          38.2                6.8 +/-    1.30      10.2 +/-    1.30  0.050 / 0.050
G20     97.8           42.1               12.8 +/-    1.51      18.0 +/-    1.51  0.170 / 0.370
G27     225.8          10.4               10.4 +/-    3.09      28.9 +/-    3.09  0.150 / 0.270
G31     174.6          41.1                9.6 +/-    0.85      13.7 +/-    0.85  0.070 / 0.260
G32     6.9            68.2                7.1 +/-    0.60       7.5 +/-    0.60  0.070 / 0.250