PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-06:27:50
G01     245.6          32.5                5.7 +/-    1.06       9.5 +/-    1.06  0.090 / 0.220
G03     314.8          45.8                3.1 +/-    1.57       4.1 +/-    1.57  0.070 / 0.200
G11     231.1          10.3                4.9 +/-    2.40      13.6 +/-    2.40  0.040 / 0.040
G14     66.4           36.4                2.8 +/-    0.62       4.4 +/-    0.62  0.040 / 0.040
G16     162.1          21.9                5.6 +/-    1.72      11.7 +/-    1.72  0.110 / 0.100
G22     296.9          70.5                4.0 +/-    1.20       4.3 +/-    1.20  0.090 / 0.110
G23     289.5          20.9                4.1 +/-    1.19       8.8 +/-    1.19  0.060 / 0.120
G26     134.1          41.2                7.2 +/-    0.67      10.3 +/-    0.67  0.060 / 0.110
G31     39.8           54.5                2.5 +/-    0.37       3.0 +/-    0.37  0.060 / 0.220
G32     80.7           21.2                3.2 +/-    0.95       6.9 +/-    0.95  0.060 / 0.230