PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/26-03:12:40
G01     70.4           32.9                3.3 +/-    1.35       5.5 +/-    1.35  0.060 / 0.050
G07     137.6          30.8                6.0 +/-    0.62      10.3 +/-    0.62  0.030 / 0.040
G11     54.8           31.9                3.4 +/-    1.69       5.7 +/-    1.69  0.050 / 0.080
G13     275.2          37.1                4.2 +/-    2.88       6.4 +/-    2.88  0.060 / 0.060
G15     301.6          15.9                1.6 +/-    1.08       4.0 +/-    1.08  0.130 / 0.210
G17     234.1          68.8                5.8 +/-    0.41       6.1 +/-    0.41  0.090 / 0.260
G19     224.6          43.1                6.2 +/-    2.10       8.6 +/-    2.10  0.070 / 0.080
G28     21.5           58.9                2.0 +/-    2.39       2.3 +/-    2.39  0.070 / 0.070
G30     135.5          57.7                7.1 +/-    0.52       8.3 +/-    0.52  0.040 / 0.030