PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-00:42:40
G01     101.0          28.4                8.7 +/-    1.09      15.8 +/-    1.09  0.040 / 0.050
G07     114.9          53.9                8.8 +/-    0.65      10.7 +/-    0.65  0.050 / 0.050
G08     41.9           17.4                6.5 +/-    1.28      15.3 +/-    1.28  0.210 / 0.240
G11     84.4           43.5                9.7 +/-    0.67      13.4 +/-    0.67  0.140 / 0.320
G13     305.3          31.3                6.8 +/-    1.87      11.6 +/-    1.87  0.040 / 0.070
G17     209.1          42.3                9.6 +/-    1.00      13.4 +/-    1.00  0.030 / 0.060
G19     210.8          18.6                9.1 +/-    1.19      20.8 +/-    1.19  0.070 / 0.100
G28     331.2          61.8                6.8 +/-    0.47       7.6 +/-    0.47  0.080 / 0.100
G30     76.4           77.3                8.7 +/-    0.20       8.9 +/-    0.20  0.020 / 0.030