PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-14:43:10
G10     293.7          50.2                4.7 +/-    0.48       5.9 +/-    0.48  0.050 / 0.070
G15     46.2           28.6                1.2 +/-    0.52       2.1 +/-    0.52  0.050 / 0.080
G18     359.5          66.1                3.2 +/-    0.94       3.5 +/-    0.94  0.070 / 0.180
G20     68.4           22.9                3.6 +/-    0.95       7.3 +/-    0.95  0.070 / 0.150
G21     97.1           71.9                4.1 +/-    0.82       4.3 +/-    0.82  0.040 / 0.040
G24     100.9          25.7                6.2 +/-    0.38      11.9 +/-    0.38  0.030 / 0.040
G27     301.5          34.0                5.7 +/-    1.45       9.2 +/-    1.45  0.060 / 0.120
G32     210.0          29.9                7.8 +/-    1.47      13.7 +/-    1.47  0.070 / 0.120