PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/10-06:27:50
G01     68.9           32.6                3.3 +/-    1.64       5.5 +/-    1.64  0.030 / 0.030
G07     138.3          28.9                5.6 +/-    1.53       9.9 +/-    1.53  0.040 / 0.040
G11     53.0           29.6                3.7 +/-    1.71       6.6 +/-    1.71  0.030 / 0.020
G13     274.0          36.8                4.5 +/-    2.18       6.9 +/-    2.18  0.020 / 0.020
G15     300.7          16.0                0.9 +/-    2.03       2.2 +/-    2.03  0.080 / 0.210
G17     237.7          71.6                5.7 +/-    0.40       6.0 +/-    0.40  0.090 / 0.240
G19     225.7          44.9                6.1 +/-    2.10       8.2 +/-    2.10  0.080 / 0.070
G28     23.7           58.6                4.0 +/-    2.62       4.6 +/-    2.62  0.090 / 0.070
G30     136.6          58.7                6.2 +/-    0.67       7.1 +/-    0.67  0.030 / 0.070