PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-07:58:00
G01     124.3          13.8                5.5 +/-    1.54      14.2 +/-    1.54  0.030 / 0.040
G07     65.7           68.3                4.7 +/-    0.72       5.0 +/-    0.72  0.040 / 0.030
G08     47.1           34.7                3.5 +/-    0.43       5.6 +/-    0.43  0.030 / 0.040
G09     173.7          27.3                5.7 +/-    1.21      10.6 +/-    1.21  0.020 / 0.030
G11     112.7          37.4                6.8 +/-    0.64      10.3 +/-    0.64  0.140 / 0.480
G13     320.0          14.8                0.7 +/-    3.90       1.8 +/-    3.90  0.120 / 0.590
G17     199.6          20.1                5.0 +/-    2.33      10.9 +/-    2.33  0.130 / 0.330
G18     98.7           18.2                6.2 +/-    1.52      14.2 +/-    1.52  0.170 / 0.370
G28     280.2          53.8                6.2 +/-    0.53       7.5 +/-    0.53  0.090 / 0.130
G30     334.6          62.1                3.8 +/-    0.61       4.2 +/-    0.61  0.070 / 0.110