PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-01:13:10
G01     128.4          10.6               -4.8 +/-   36.31     -13.2 +/-   36.31  0.080 / 0.090
G07     47.0           69.6                7.1 +/-    0.61       7.5 +/-    0.61  0.070 / 0.060
G08     52.6           42.0                6.2 +/-    0.61       8.7 +/-    0.61  0.050 / 0.040
G09     179.2          38.9                8.7 +/-    1.46      12.8 +/-    1.46  0.060 / 0.040
G11     122.3          33.5                8.7 +/-    1.29      14.1 +/-    1.29  0.080 / 0.350
G17     200.0          12.8                7.8 +/-    3.20      20.4 +/-    3.20  0.180 / 0.250
G28     274.5          52.5                7.8 +/-    2.90       9.5 +/-    2.90  0.300 / 0.390
G30     336.2          61.8                5.0 +/-    0.55       5.6 +/-    0.55  0.190 / 0.340