PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-01:27:30
G01     99.0           29.2                5.9 +/-    1.52      10.5 +/-    1.52  0.040 / 0.040
G07     117.3          52.3                6.1 +/-    0.41       7.5 +/-    0.41  0.040 / 0.040
G08     41.9           15.4                3.2 +/-    2.04       7.8 +/-    2.04  0.160 / 0.190
G11     81.3           43.0                5.6 +/-    0.96       7.8 +/-    0.96  0.140 / 0.300
G13     303.5          32.2                4.0 +/-    1.55       6.6 +/-    1.55  0.070 / 0.130
G17     210.0          44.7                8.4 +/-    0.94      11.4 +/-    0.94  0.070 / 0.120
G19     211.5          20.5                7.3 +/-    1.83      15.9 +/-    1.83  0.050 / 0.060
G28     335.1          61.8                4.7 +/-    0.35       5.3 +/-    0.35  0.040 / 0.050
G30     84.5           76.6                6.2 +/-    0.33       6.3 +/-    0.33  0.110 / 0.110