PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/12-05:28:00
G01     40.3           14.9                1.6 +/-    1.20       4.0 +/-    1.20  0.060 / 0.090
G02     198.7          11.6                2.5 +/-    5.51       6.6 +/-    5.51  0.070 / 0.130
G06     178.0          38.0                6.5 +/-    1.62       9.8 +/-    1.62  0.180 / 0.370
G13     237.1          20.8                5.9 +/-    1.48      12.7 +/-    1.48  0.140 / 0.390
G15     268.3          11.8                4.8 +/-    1.77      12.8 +/-    1.77  0.040 / 0.030
G17     5.4            68.9                4.3 +/-    0.83       4.6 +/-    0.83  0.040 / 0.040
G19     286.3          70.6                3.9 +/-    0.51       4.2 +/-    0.51  0.140 / 0.380
G24     316.3          19.9                2.6 +/-    2.10       5.8 +/-    2.10  0.130 / 0.300
G28     75.0           45.3                3.8 +/-    0.76       5.1 +/-    0.76  0.120 / 0.330
G30     154.2          23.0                6.0 +/-    1.00      12.2 +/-    1.00  0.110 / 0.300