PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-12:42:40
G01     65.0           31.8                6.7 +/-    0.86      11.3 +/-    0.86  0.050 / 0.110
G06     181.9          10.5              -16.9 +/-   18.23     -46.7 +/-   18.23  0.060 / 0.110
G07     139.9          24.2                5.4 +/-    1.81      10.8 +/-    1.81  0.070 / 0.090
G11     50.0           25.1                5.5 +/-    2.17      10.7 +/-    2.17  0.050 / 0.130
G13     270.9          36.0                6.7 +/-    1.26      10.4 +/-    1.26  0.030 / 0.030
G15     299.7          15.6                1.3 +/-    1.64       3.1 +/-    1.64  0.030 / 0.030
G17     248.3          75.8                7.2 +/-    0.33       7.4 +/-    0.33  0.020 / 0.020
G19     228.6          48.6                7.9 +/-    2.29      10.1 +/-    2.29  0.030 / 0.030
G28     28.7           57.8                6.3 +/-    1.62       7.3 +/-    1.62  0.070 / 0.250
G30     139.6          58.6                6.7 +/-    0.30       7.7 +/-    0.30  0.080 / 0.150