PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/04-11:12:50
G06     181.9          11.5               -0.1 +/-   26.68      -0.2 +/-   26.68  0.070 / 0.180
G07     140.8          23.0                6.2 +/-    0.91      12.7 +/-    0.91  0.050 / 0.170
G11     49.2           24.2                3.8 +/-    1.26       7.5 +/-    1.26  0.030 / 0.060
G13     268.3          35.7                7.7 +/-    1.49      12.0 +/-    1.49  0.040 / 0.050
G15     297.3          16.1                4.6 +/-    2.46      11.2 +/-    2.46  0.100 / 0.300
G17     254.6          76.9                5.9 +/-    0.73       6.1 +/-    0.73  0.110 / 0.300
G19     230.4          50.2                8.7 +/-    1.00      11.0 +/-    1.00  0.030 / 0.030
G28     32.0           57.2                4.1 +/-    0.69       4.8 +/-    0.69  0.030 / 0.030
G30     141.2          56.1                6.1 +/-    0.84       7.2 +/-    0.84  0.130 / 0.350