PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-02:43:00
G07     48.3           68.9                5.4 +/-    0.39       5.7 +/-    0.39  0.030 / 0.040
G08     51.8           40.0                3.8 +/-    0.92       5.6 +/-    0.92  0.030 / 0.040
G09     176.8          38.3                8.7 +/-    0.96      13.0 +/-    0.96  0.050 / 0.090
G11     120.1          33.7               -0.0 +/-    0.77      -0.0 +/-    0.77  0.050 / 0.070
G17     198.4          13.6                4.5 +/-    1.76      11.4 +/-    1.76  0.130 / 0.250
G18     103.6          14.8                6.9 +/-    1.73      17.2 +/-    1.73  0.110 / 0.240
G23     161.5          13.0                5.6 +/-    3.98      14.5 +/-    3.98  0.110 / 0.110
G27     38.5           12.5                2.5 +/-    2.70       6.5 +/-    2.70  0.110 / 0.180
G28     268.3          49.1                5.5 +/-    0.88       7.0 +/-    0.88  0.040 / 0.050
G30     327.1          56.4                3.3 +/-    0.89       3.8 +/-    0.89  0.040 / 0.050