PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/12-04:42:40
G01     54.3           28.0                2.1 +/-    2.89       3.8 +/-    2.89  0.050 / 0.050
G06     181.5          17.5                4.9 +/-    3.04      11.4 +/-    3.04  0.040 / 0.050
G07     144.7          16.7                5.3 +/-    0.88      12.7 +/-    0.88  0.030 / 0.020
G11     46.5           20.1                2.3 +/-    3.26       5.0 +/-    3.26  0.030 / 0.020
G13     256.9          32.7                3.7 +/-    2.10       6.2 +/-    2.10  0.080 / 0.120
G15     287.5          16.6                5.1 +/-    1.45      12.2 +/-    1.45  0.090 / 0.120
G17     288.1          78.7                5.1 +/-    0.80       5.2 +/-    0.80  0.110 / 0.230
G19     240.4          57.0                6.1 +/-    2.81       7.1 +/-    2.81  0.170 / 0.250
G28     46.3           54.2                3.9 +/-    0.87       4.7 +/-    0.87  0.160 / 0.280
G30     146.5          43.4                5.6 +/-    0.61       7.7 +/-    0.61  0.140 / 0.270