PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-14:27:50
G01     112.2          22.3               10.2 +/-    0.81      21.3 +/-    0.81  0.090 / 0.230
G07     99.9           58.8                9.4 +/-    0.72      10.8 +/-    0.72  0.090 / 0.280
G08     42.5           23.4                6.5 +/-    1.47      13.2 +/-    1.47  0.030 / 0.030
G09     174.7          17.6               10.2 +/-    3.25      23.7 +/-    3.25  0.030 / 0.030
G11     93.7           40.1                8.8 +/-    0.48      12.8 +/-    0.48  0.040 / 0.040
G13     314.8          23.2                6.0 +/-    2.97      12.3 +/-    2.97  0.040 / 0.040
G17     203.1          34.5               12.6 +/-    1.00      20.2 +/-    1.00  0.080 / 0.090
G28     306.8          59.5                9.0 +/-    0.76      10.3 +/-    0.76  0.070 / 0.080
G30     355.7          72.6                9.1 +/-    0.78       9.4 +/-    0.78  0.100 / 0.160