PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/15-00:42:50
G01     49.0           24.7                8.6 +/-    2.14      17.0 +/-    2.14  0.080 / 0.120
G06     178.3          25.8               12.8 +/-    1.46      24.5 +/-    1.46  0.130 / 0.110
G07     146.8          11.5               12.5 +/-    2.01      33.8 +/-    2.01  0.020 / 0.030
G11     45.1           16.2                9.1 +/-    2.28      21.9 +/-    2.28  0.020 / 0.030
G13     249.7          29.5               10.5 +/-    1.87      18.5 +/-    1.87  0.040 / 0.040
G15     281.7          15.7                8.8 +/-    1.86      21.6 +/-    1.86  0.030 / 0.050
G17     307.2          77.6               10.0 +/-    0.57      10.3 +/-    0.57  0.100 / 0.120
G19     249.4          61.1                9.9 +/-    0.61      11.2 +/-    0.61  0.120 / 0.180
G28     55.4           51.9                8.9 +/-    1.06      10.9 +/-    1.06  0.200 / 0.170
G30     149.5          36.8               13.3 +/-    0.83      20.4 +/-    0.83  0.150 / 0.260