PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-00:13:00
G01     128.3          10.7              -10.2 +/-   42.00     -28.0 +/-   42.00  0.050 / 0.050
G07     47.0           69.7                7.6 +/-    0.45       8.0 +/-    0.45  0.050 / 0.060
G08     52.8           42.5                6.5 +/-    0.43       9.1 +/-    0.43  0.040 / 0.070
G09     179.3          38.8                9.0 +/-    1.36      13.4 +/-    1.36  0.040 / 0.080
G11     122.8          33.6               10.7 +/-    1.02      17.5 +/-    1.02  0.110 / 0.240
G17     200.2          12.4                9.5 +/-    2.79      25.0 +/-    2.79  0.060 / 0.230
G28     274.7          52.6                7.5 +/-    0.70       9.1 +/-    0.70  0.180 / 0.340
G30     337.6          62.6                5.6 +/-    0.68       6.2 +/-    0.68  0.140 / 0.300