PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-00:57:40
G01     91.1           31.6                8.8 +/-    0.58      14.9 +/-    0.58  0.040 / 0.060
G07     124.8          46.4                9.6 +/-    1.61      12.7 +/-    1.61  0.040 / 0.050
G08     42.5           10.2                5.9 +/-    3.55      16.3 +/-    3.55  0.040 / 0.040
G11     72.6           41.7                8.3 +/-    0.60      11.8 +/-    0.60  0.030 / 0.050
G13     296.2          35.2                9.4 +/-    1.11      14.9 +/-    1.11  0.140 / 0.330
G15     315.4          10.2               -9.5 +/-   14.33     -26.4 +/-   14.33  0.090 / 0.410
G17     214.4          51.2               11.5 +/-    0.87      14.4 +/-    0.87  0.110 / 0.120
G19     214.3          26.7                9.0 +/-    2.93      17.0 +/-    2.93  0.100 / 0.120
G28     349.1          61.7                6.8 +/-    0.50       7.6 +/-    0.50  0.040 / 0.090
G30     108.4          72.3                9.2 +/-    0.92       9.6 +/-    0.92  0.050 / 0.080