PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-00:57:50
G01     93.3           31.1                7.6 +/-    1.09      13.0 +/-    1.09  0.030 / 0.030
G07     122.9          48.1                8.6 +/-    0.37      11.2 +/-    0.37  0.040 / 0.040
G08     42.3           11.7                6.1 +/-    2.23      16.3 +/-    2.23  0.290 / 0.280
G11     75.0           42.2                6.9 +/-    0.70       9.6 +/-    0.70  0.150 / 0.250
G13     298.3          34.5                4.7 +/-    2.44       7.6 +/-    2.44  0.030 / 0.060
G17     213.1          49.3                9.3 +/-    0.46      11.9 +/-    0.46  0.050 / 0.060
G19     213.5          25.0                8.5 +/-    1.70      16.7 +/-    1.70  0.060 / 0.100
G28     345.3          61.8                6.1 +/-    0.56       6.8 +/-    0.56  0.060 / 0.080
G30     103.1          73.6                8.1 +/-    0.86       8.5 +/-    0.86  0.030 / 0.040