PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-11:43:00
G01     64.3           31.6                4.5 +/-    0.47       7.5 +/-    0.47  0.080 / 0.140
G06     182.0          10.6              -12.9 +/-   31.17     -35.6 +/-   31.17  0.050 / 0.140
G07     140.2          24.0                5.2 +/-    1.60      10.5 +/-    1.60  0.030 / 0.040
G11     49.8           25.0                3.2 +/-    0.90       6.2 +/-    0.90  0.030 / 0.030
G13     269.9          35.9                7.0 +/-    1.12      11.0 +/-    1.12  0.100 / 0.370
G15     298.7          15.9                3.7 +/-    3.14       8.9 +/-    3.14  0.110 / 0.350
G17     250.1          76.1                6.5 +/-    0.61       6.6 +/-    0.61  0.120 / 0.340
G19     229.1          49.1                8.0 +/-    0.97      10.2 +/-    0.97  0.170 / 0.350
G28     29.9           57.6                2.1 +/-    0.55       2.5 +/-    0.55  0.020 / 0.030
G30     140.1          57.6                5.1 +/-    0.55       6.0 +/-    0.55  0.030 / 0.030