PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-10:27:50
G01     71.7           33.0                3.4 +/-    0.87       5.5 +/-    0.87  0.050 / 0.070
G07     136.9          30.9                5.1 +/-    0.60       8.7 +/-    0.60  0.090 / 0.100
G11     53.3           30.2                3.1 +/-    2.20       5.5 +/-    2.20  0.030 / 0.050
G13     275.0          37.9                5.0 +/-    1.22       7.6 +/-    1.22  0.030 / 0.030
G15     307.3          12.6                1.7 +/-    1.05       4.5 +/-    1.05  0.080 / 0.080
G17     232.7          70.4                5.5 +/-    0.32       5.8 +/-    0.32  0.050 / 0.080
G18     48.4           17.6                2.6 +/-    3.17       6.1 +/-    3.17  0.060 / 0.080
G19     223.3          37.0                5.5 +/-    1.32       8.5 +/-    1.32  0.050 / 0.100
G28     16.2           59.8                4.2 +/-    0.62       4.8 +/-    0.62  0.130 / 0.230
G30     134.8          64.4                5.7 +/-    0.52       6.3 +/-    0.52  0.100 / 0.200