PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/04-05:57:40
G01     67.0           32.3                4.2 +/-    0.92       7.1 +/-    0.92  0.070 / 0.110
G07     139.0          26.1                7.9 +/-    0.96      15.1 +/-    0.96  0.070 / 0.120
G11     50.5           27.1                3.3 +/-    2.27       6.2 +/-    2.27  0.040 / 0.030
G13     269.8          37.4                7.3 +/-    1.10      11.1 +/-    1.10  0.040 / 0.030
G15     301.3          14.9                0.4 +/-    1.86       1.0 +/-    1.86  0.040 / 0.090
G17     242.4          74.8                7.8 +/-    0.70       8.1 +/-    0.70  0.040 / 0.140
G19     226.2          42.5                8.3 +/-    1.26      11.7 +/-    1.26  0.040 / 0.060
G28     21.5           59.3                6.9 +/-    0.44       7.9 +/-    0.44  0.040 / 0.070
G30     139.0          60.3                8.9 +/-    0.89      10.1 +/-    0.89  0.030 / 0.030