PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-11:57:40
G01     57.1           29.4                5.0 +/-    2.77       8.9 +/-    2.77  0.040 / 0.030
G07     143.4          19.0                4.5 +/-    3.52      10.2 +/-    3.52  0.040 / 0.050
G11     46.5           20.4                3.9 +/-    2.59       8.5 +/-    2.59  0.120 / 0.100
G13     258.6          34.3                8.2 +/-    0.71      13.2 +/-    0.71  0.050 / 0.090
G15     296.4          14.2                2.1 +/-    1.17       5.4 +/-    1.17  0.100 / 0.130
G17     278.2          79.0                6.1 +/-    0.79       6.2 +/-    0.79  0.080 / 0.120
G18     39.8           10.0                2.4 +/-    1.89       6.6 +/-    1.89  0.040 / 0.050
G19     234.6          48.5                7.4 +/-    1.84       9.5 +/-    1.84  0.040 / 0.040
G28     39.2           56.2                5.6 +/-    0.70       6.6 +/-    0.70  0.110 / 0.170
G30     146.1          50.9                6.6 +/-    0.69       8.2 +/-    0.69  0.110 / 0.200