PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-14:27:50
G01     111.2          23.2               10.3 +/-    1.71      21.0 +/-    1.71  0.040 / 0.030
G07     99.7           61.4                9.6 +/-    0.57      10.8 +/-    0.57  0.030 / 0.030
G08     42.4           23.6                6.7 +/-    1.12      13.6 +/-    1.12  0.100 / 0.240
G09     174.7          16.2               11.3 +/-    2.51      27.3 +/-    2.51  0.090 / 0.220
G11     94.3           42.3               11.4 +/-    0.97      16.0 +/-    0.97  0.040 / 0.070
G13     312.6          26.0                9.3 +/-    2.00      17.8 +/-    2.00  0.040 / 0.050
G17     204.3          33.3               12.0 +/-    1.65      19.7 +/-    1.65  0.030 / 0.040
G18     84.7           23.5                7.8 +/-    1.09      15.9 +/-    1.09  0.030 / 0.040
G28     309.3          60.1                9.8 +/-    0.78      11.1 +/-    0.78  0.070 / 0.090
G30     4.7            75.2               10.2 +/-    0.45      10.5 +/-    0.45  0.040 / 0.090