PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/24-12:57:40
G01     126.9          11.8                8.1 +/-    2.56      21.8 +/-    2.56  0.030 / 0.040
G07     53.3           69.5                5.8 +/-    0.48       6.1 +/-    0.48  0.030 / 0.040
G08     49.9           38.6                4.8 +/-    0.78       7.2 +/-    0.78  0.110 / 0.310
G09     176.7          34.2                8.7 +/-    1.72      14.1 +/-    1.72  0.090 / 0.360
G11     117.3          35.5                6.1 +/-    0.85       9.5 +/-    0.85  0.040 / 0.070
G13     321.0          12.0                3.3 +/-    3.19       8.7 +/-    3.19  0.050 / 0.070
G17     199.8          15.3                4.1 +/-    3.85      10.0 +/-    3.85  0.050 / 0.100
G18     103.3          16.7                5.9 +/-    1.09      14.0 +/-    1.09  0.050 / 0.100
G28     276.3          52.9                6.2 +/-    1.11       7.5 +/-    1.11  0.030 / 0.030
G30     331.8          59.9                4.2 +/-    0.61       4.8 +/-    0.61  0.040 / 0.040