PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/07-23:42:50
G01     94.0           30.9               10.9 +/-    1.50      18.7 +/-    1.50  0.040 / 0.050
G07     122.2          48.7               11.8 +/-    0.39      15.2 +/-    0.39  0.030 / 0.050
G08     42.3           13.0                6.7 +/-    3.50      17.6 +/-    3.50  0.090 / 0.090
G11     76.1           42.6                9.6 +/-    0.81      13.4 +/-    0.81  0.080 / 0.090
G13     298.9          34.4                7.0 +/-    1.46      11.2 +/-    1.46  0.070 / 0.040
G17     212.9          47.8               10.9 +/-    0.69      14.1 +/-    0.69  0.040 / 0.050
G19     213.2          24.1               12.5 +/-    2.98      24.9 +/-    2.98  0.140 / 0.140
G28     343.9          61.9                8.2 +/-    0.62       9.2 +/-    0.62  0.440 / 0.190
G30     99.6           74.8               10.6 +/-    0.55      10.9 +/-    0.55  0.040 / 0.050