PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-18:57:50
G01     112.9          22.2               16.3 +/-    1.23      33.9 +/-    1.23  0.060 / 0.100
G07     95.7           63.0               11.6 +/-    0.44      12.9 +/-    0.44  0.080 / 0.090
G08     43.4           28.2                9.8 +/-    0.66      17.9 +/-    0.66  0.030 / 0.040
G09     176.2          19.5               14.3 +/-    1.28      31.9 +/-    1.28  0.050 / 0.050
G11     99.1           42.2               15.4 +/-    0.53      21.6 +/-    0.53  0.130 / 0.240
G13     314.0          24.4                9.6 +/-    1.63      19.1 +/-    1.63  0.130 / 0.250
G17     204.7          28.2               12.1 +/-    2.98      22.0 +/-    2.98  0.050 / 0.090
G18     87.4           23.1               12.4 +/-    0.88      25.3 +/-    0.88  0.050 / 0.080
G28     306.5          59.8               11.8 +/-    0.82      13.5 +/-    0.82  0.030 / 0.040
G30     6.4            74.8               11.3 +/-    0.70      11.7 +/-    0.70  0.030 / 0.030