PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-08:27:50
G01     257.9          38.1                4.6 +/-    1.19       6.9 +/-    1.19  0.050 / 0.090
G03     316.5          38.4                4.2 +/-    1.26       6.2 +/-    1.26  0.060 / 0.090
G11     242.0          15.2                2.8 +/-    3.03       7.0 +/-    3.03  0.030 / 0.050
G14     51.4           46.7                2.1 +/-    0.69       2.8 +/-    0.69  0.030 / 0.040
G18     225.5          32.0                4.8 +/-    1.22       8.1 +/-    1.22  0.040 / 0.090
G22     309.5          62.9                3.2 +/-    1.12       3.5 +/-    1.12  0.040 / 0.080
G25     44.1           13.0                0.5 +/-    1.22       1.3 +/-    1.22  0.090 / 0.120
G26     138.6          34.2              -11.2 +/-   32.27     -18.0 +/-   32.27  0.060 / 0.090
G31     43.3           61.7                3.1 +/-    0.37       3.5 +/-    0.37  0.070 / 0.180
G32     73.5           24.8                2.8 +/-    0.73       5.5 +/-    0.73  0.110 / 0.180