PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-05:27:50
G01     112.5          22.2                6.5 +/-    0.66      13.6 +/-    0.66  0.100 / 0.170
G07     98.8           60.6                7.2 +/-    0.90       8.1 +/-    0.90  0.150 / 0.180
G08     42.2           22.7                3.1 +/-    1.34       6.4 +/-    1.34  0.030 / 0.030
G09     173.7          16.2                6.9 +/-    2.38      16.7 +/-    2.38  0.030 / 0.030
G11     94.6           42.0                6.8 +/-    0.56       9.5 +/-    0.56  0.030 / 0.030
G13     313.5          25.3                4.4 +/-    1.42       8.5 +/-    1.42  0.030 / 0.030
G17     202.6          34.5                7.6 +/-    0.90      12.1 +/-    0.90  0.070 / 0.080
G28     303.2          58.9                5.3 +/-    1.16       6.1 +/-    1.16  0.070 / 0.090
G30     357.1          73.6                6.6 +/-    1.06       6.9 +/-    1.06  0.040 / 0.050