PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/15-09:43:10
G01     118.4          18.4                4.1 +/-    1.64       9.4 +/-    1.64  0.030 / 0.040
G07     83.9           65.6                4.6 +/-    0.41       4.9 +/-    0.41  0.040 / 0.030
G08     44.0           29.0                1.5 +/-    0.67       2.7 +/-    0.67  0.030 / 0.070
G09     173.7          21.0                4.1 +/-    0.87       8.7 +/-    0.87  0.040 / 0.050
G11     104.1          40.4                5.8 +/-    0.65       8.4 +/-    0.65  0.030 / 0.040
G13     317.1          20.4                2.6 +/-    2.94       5.7 +/-    2.94  0.020 / 0.030
G17     201.2          26.8                5.2 +/-    0.95       9.8 +/-    0.95  0.140 / 0.330
G18     92.0           21.0                4.4 +/-    0.82       9.5 +/-    0.82  0.150 / 0.310
G28     292.8          57.2                4.0 +/-    0.80       4.6 +/-    0.80  0.090 / 0.200
G30     344.6          68.3                1.7 +/-    0.89       1.9 +/-    0.89  0.100 / 0.190