PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/08-05:42:40
G01     98.1           29.5                6.1 +/-    0.61      10.8 +/-    0.61  0.030 / 0.040
G07     118.3          50.9                6.8 +/-    0.56       8.5 +/-    0.56  0.040 / 0.050
G08     41.8           12.9                1.6 +/-    3.03       4.1 +/-    3.03  0.040 / 0.060
G11     78.1           41.6                4.3 +/-    1.19       6.1 +/-    1.19  0.040 / 0.050
G13     303.3          32.2                2.4 +/-    1.14       4.0 +/-    1.14  0.230 / 0.200
G17     209.8          47.6                6.0 +/-    0.40       7.8 +/-    0.40  0.070 / 0.220
G19     211.6          21.8                5.0 +/-    1.76      10.5 +/-    1.76  0.030 / 0.040
G28     336.6          61.8                3.4 +/-    0.30       3.7 +/-    0.30  0.020 / 0.030
G30     76.4           78.5                4.1 +/-    0.82       4.2 +/-    0.82  0.060 / 0.100