PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/13-09:42:40
G01     60.8           30.8                4.2 +/-    1.19       7.2 +/-    1.19  0.040 / 0.040
G07     141.8          21.9                7.1 +/-    2.62      14.9 +/-    2.62  0.030 / 0.040
G11     47.8           23.1                3.5 +/-    1.94       7.3 +/-    1.94  0.050 / 0.110
G13     262.9          35.8                7.9 +/-    2.34      12.3 +/-    2.34  0.070 / 0.130
G15     298.2          14.6                2.6 +/-    1.19       6.5 +/-    1.19  0.060 / 0.090
G17     261.9          78.0                7.7 +/-    0.44       7.9 +/-    0.44  0.050 / 0.070
G18     41.6           11.9                2.4 +/-    1.78       6.3 +/-    1.78  0.260 / 0.360
G19     231.0          46.0                7.5 +/-    2.06      10.0 +/-    2.06  0.120 / 0.340
G28     32.5           57.5                3.5 +/-    0.92       4.1 +/-    0.92  0.060 / 0.070
G30     143.7          54.9                8.1 +/-    0.42       9.7 +/-    0.42  0.110 / 0.070