PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-06:13:00
G07     41.2           69.4                3.5 +/-    0.61       3.8 +/-    0.61  0.090 / 0.240
G08     53.1           41.2                2.4 +/-    0.56       3.5 +/-    0.56  0.090 / 0.160
G09     175.0          37.3                5.1 +/-    1.10       7.7 +/-    1.10  0.120 / 0.240
G11     121.7          32.8                4.4 +/-    0.92       7.3 +/-    0.92  0.110 / 0.240
G17     198.5          12.0                0.3 +/-   11.76       0.7 +/-   11.76  0.030 / 0.030
G18     106.2          14.2                4.4 +/-    1.04      11.1 +/-    1.04  0.030 / 0.030
G23     161.3          13.9                4.9 +/-    1.56      12.6 +/-    1.56  0.040 / 0.040
G27     38.6           12.8                2.1 +/-    2.59       5.4 +/-    2.59  0.030 / 0.030
G28     267.2          48.9                4.6 +/-    4.22       5.9 +/-    4.22  0.130 / 0.300
G30     325.5          55.0                2.7 +/-    0.46       3.2 +/-    0.46  0.150 / 0.270