PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-09:43:10
G01     119.7          17.3                7.8 +/-    2.32      18.4 +/-    2.32  0.110 / 0.290
G07     81.2           65.3                7.6 +/-    0.65       8.3 +/-    0.65  0.220 / 0.350
G08     44.9           30.7                3.0 +/-    1.59       5.3 +/-    1.59  0.030 / 0.030
G09     175.9          25.6                7.0 +/-    2.16      13.4 +/-    2.16  0.030 / 0.030
G11     106.1          38.4                8.5 +/-    1.36      12.7 +/-    1.36  0.040 / 0.020
G13     319.0          16.8                3.8 +/-    3.07       9.0 +/-    3.07  0.030 / 0.030
G17     200.8          25.9                6.8 +/-    2.28      13.0 +/-    2.28  0.050 / 0.080
G28     291.9          57.2                5.9 +/-    1.96       6.9 +/-    1.96  0.050 / 0.090
G30     343.4          66.8                4.6 +/-    0.80       5.0 +/-    0.80  0.100 / 0.140