PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-00:57:40
G01     93.3           31.1                8.6 +/-    0.47      14.7 +/-    0.47  0.190 / 0.260
G07     122.9          48.1                9.0 +/-    0.70      11.6 +/-    0.70  0.140 / 0.290
G08     42.3           11.7                4.9 +/-    2.08      13.2 +/-    2.08  0.040 / 0.060
G11     75.0           42.2                7.3 +/-    0.51      10.2 +/-    0.51  0.040 / 0.050
G13     298.3          34.5                7.1 +/-    1.54      11.4 +/-    1.54  0.030 / 0.040
G17     213.1          49.3               10.3 +/-    1.10      13.1 +/-    1.10  0.040 / 0.050
G19     213.5          25.0               12.5 +/-    2.62      24.4 +/-    2.62  0.070 / 0.120
G28     345.3          61.8                6.2 +/-    0.63       6.9 +/-    0.63  0.080 / 0.130
G30     103.1          73.6                9.5 +/-    0.98       9.9 +/-    0.98  0.030 / 0.050