PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/25-08:58:00
G01     58.8           30.1                2.5 +/-    2.61       4.3 +/-    2.61  0.060 / 0.070
G07     142.6          20.0                4.4 +/-    1.84       9.6 +/-    1.84  0.100 / 0.080
G11     47.0           21.5                2.6 +/-    2.59       5.5 +/-    2.59  0.040 / 0.040
G13     260.6          35.1                5.5 +/-    2.01       8.8 +/-    2.01  0.040 / 0.040
G15     296.0          15.0                1.0 +/-    2.12       2.5 +/-    2.12  0.130 / 0.180
G17     272.0          79.1                5.8 +/-    0.67       5.9 +/-    0.67  0.110 / 0.190
G18     40.3           10.5                1.9 +/-    1.04       5.4 +/-    1.04  0.050 / 0.110
G19     232.9          48.1                4.9 +/-    2.04       6.3 +/-    2.04  0.050 / 0.100
G28     35.4           57.1                2.9 +/-    1.62       3.4 +/-    1.62  0.100 / 0.420
G30     145.0          52.9                5.5 +/-    0.48       6.7 +/-    0.48  0.080 / 0.390