PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-08:58:00
G01     113.9          21.5                5.8 +/-    1.03      12.3 +/-    1.03  0.040 / 0.040
G07     95.3           62.4                5.2 +/-    1.17       5.7 +/-    1.17  0.040 / 0.040
G08     42.6           24.4                2.2 +/-    1.13       4.4 +/-    1.13  0.090 / 0.200
G09     172.6          15.5                4.6 +/-    0.74      11.4 +/-    0.74  0.100 / 0.210
G11     97.0           41.8                6.4 +/-    0.31       9.0 +/-    0.31  0.030 / 0.040
G13     314.3          24.2                3.5 +/-    1.02       7.0 +/-    1.02  0.030 / 0.040
G17     202.5          32.4                6.3 +/-    1.64      10.5 +/-    1.64  0.090 / 0.240
G18     86.3           22.5                3.0 +/-    1.04       6.2 +/-    1.04  0.090 / 0.210
G28     301.9          58.8                4.4 +/-    0.80       5.1 +/-    0.80  0.080 / 0.220
G30     353.9          72.5                5.1 +/-    0.93       5.3 +/-    0.93  0.070 / 0.190