PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-06:57:40
G01     112.7          22.3                7.8 +/-    0.95      16.2 +/-    0.95  0.040 / 0.050
G07     97.4           61.4                5.2 +/-    0.50       5.9 +/-    0.50  0.030 / 0.060
G08     42.7           24.4                1.8 +/-    1.42       3.6 +/-    1.42  0.050 / 0.090
G09     175.8          19.0                6.7 +/-    1.37      15.2 +/-    1.37  0.060 / 0.090
G11     96.9           41.2                6.7 +/-    0.63       9.5 +/-    0.63  0.030 / 0.040
G13     314.7          23.3                0.9 +/-    2.21       1.8 +/-    2.21  0.020 / 0.040
G17     203.3          33.5                6.1 +/-    1.66      10.0 +/-    1.66  0.060 / 0.100
G28     307.5          59.9                4.6 +/-    0.83       5.2 +/-    0.83  0.070 / 0.120
G30     4.0            74.2                4.8 +/-    0.78       5.0 +/-    0.78  0.090 / 0.210