PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-05:12:40
G01     94.6           30.6                6.4 +/-    1.31      11.0 +/-    1.31  0.030 / 0.050
G07     121.7          48.4                8.0 +/-    0.41      10.3 +/-    0.41  0.040 / 0.050
G08     42.1           10.6                1.9 +/-    3.20       5.2 +/-    3.20  0.140 / 0.370
G11     74.3           41.0                4.4 +/-    0.93       6.2 +/-    0.93  0.110 / 0.270
G13     300.1          33.7                4.2 +/-    1.36       6.8 +/-    1.36  0.040 / 0.040
G17     211.8          50.6                9.1 +/-    0.46      11.4 +/-    0.46  0.030 / 0.040
G19     212.9          24.6                6.9 +/-    1.94      13.7 +/-    1.94  0.060 / 0.090
G28     343.0          61.8                3.4 +/-    0.77       3.8 +/-    0.77  0.090 / 0.070
G30     92.6           76.8                5.6 +/-    0.32       5.7 +/-    0.32  0.040 / 0.070