PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-14:43:10
G01     118.0          18.7                9.4 +/-    1.48      21.3 +/-    1.48  0.030 / 0.030
G07     83.5           66.0                9.5 +/-    0.28      10.3 +/-    0.28  0.030 / 0.030
G08     44.5           30.5                7.6 +/-    0.88      13.2 +/-    0.88  0.100 / 0.290
G09     176.0          23.6                9.5 +/-    2.67      19.2 +/-    2.67  0.110 / 0.350
G11     104.8          40.4                9.7 +/-    0.72      14.0 +/-    0.72  0.040 / 0.060
G13     317.0          20.5                7.9 +/-    2.83      17.2 +/-    2.83  0.050 / 0.080
G17     202.2          25.2                9.3 +/-    1.76      18.1 +/-    1.76  0.020 / 0.040
G18     92.8           21.3                8.8 +/-    1.26      18.8 +/-    1.26  0.030 / 0.040
G28     295.0          57.8                8.6 +/-    1.09       9.9 +/-    1.09  0.040 / 0.070
G30     347.9          69.4                8.4 +/-    0.65       8.9 +/-    0.65  0.050 / 0.100