PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-14:27:50
G01     117.9          18.8               10.7 +/-    1.69      24.1 +/-    1.69  0.140 / 0.320
G07     84.0           65.9               10.7 +/-    0.30      11.5 +/-    0.30  0.190 / 0.280
G08     44.3           30.1                8.0 +/-    1.15      14.0 +/-    1.15  0.030 / 0.030
G09     175.9          23.4               10.2 +/-    0.97      20.7 +/-    0.97  0.040 / 0.030
G11     104.5          40.5               10.4 +/-    0.86      15.0 +/-    0.86  0.030 / 0.040
G13     316.9          20.6                8.0 +/-    1.80      17.4 +/-    1.80  0.030 / 0.030
G17     202.2          25.5               10.0 +/-    3.04      19.3 +/-    3.04  0.110 / 0.200
G18     92.6           21.4                9.0 +/-    1.76      19.1 +/-    1.76  0.130 / 0.200
G28     295.2          57.9                9.0 +/-    0.99      10.4 +/-    0.99  0.130 / 0.180
G30     347.9          69.4               10.3 +/-    0.52      11.0 +/-    0.52  0.150 / 0.190