PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/25-08:57:50
G01     58.8           30.1                2.6 +/-    0.58       4.6 +/-    0.58  0.040 / 0.040
G07     142.6          20.0                5.0 +/-    1.14      11.0 +/-    1.14  0.040 / 0.050
G11     47.0           21.5                1.4 +/-    1.66       2.9 +/-    1.66  0.080 / 0.130
G13     260.6          35.1                3.9 +/-    1.42       6.2 +/-    1.42  0.060 / 0.190
G15     296.0          15.0                2.7 +/-    1.93       6.7 +/-    1.93  0.050 / 0.100
G17     272.0          79.1                5.3 +/-    0.86       5.4 +/-    0.86  0.040 / 0.090
G18     40.3           10.5                1.9 +/-    2.03       5.1 +/-    2.03  0.140 / 0.450
G19     232.9          48.1                5.8 +/-    2.48       7.5 +/-    2.48  0.190 / 0.370
G28     35.4           57.1                3.0 +/-    0.69       3.5 +/-    0.69  0.050 / 0.140
G30     145.0          52.9                6.3 +/-    0.77       7.7 +/-    0.77  0.060 / 0.140