PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-03:12:40
G01     301.1          36.6                4.7 +/-    1.90       7.3 +/-    1.90  0.040 / 0.050
G10     111.7          36.6                3.2 +/-    0.59       5.0 +/-    0.59  0.040 / 0.050
G11     273.1          29.0                2.3 +/-    1.09       4.2 +/-    1.09  0.060 / 0.080
G14     12.6           63.0                3.6 +/-    0.64       4.0 +/-    0.64  0.050 / 0.090
G18     120.8          10.4                2.2 +/-    1.76       6.2 +/-    1.76  0.100 / 0.130
G22     311.4          30.4                3.7 +/-    1.14       6.5 +/-    1.14  0.080 / 0.130
G25     72.7           17.2                4.2 +/-    1.64       9.8 +/-    1.64  0.070 / 0.130
G31     164.0          70.3                2.1 +/-    0.32       2.3 +/-    0.32  0.060 / 0.120
G32     39.9           50.2                2.7 +/-    1.57       3.4 +/-    1.57  0.060 / 0.040