PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-14:42:40
G05     50.6           13.2                3.7 +/-    2.29       9.5 +/-    2.29  0.070 / 0.100
G10     239.4          15.3                4.1 +/-    1.30      10.0 +/-    1.30  0.090 / 0.160
G13     70.8           36.6                6.9 +/-    0.65      10.7 +/-    0.65  0.040 / 0.040
G15     113.2          54.8                6.6 +/-    0.49       7.9 +/-    0.49  0.040 / 0.040
G16     313.4          11.6                3.4 +/-    9.38       9.3 +/-    9.38  0.090 / 0.150
G18     251.5          47.8                6.1 +/-    3.38       7.9 +/-    3.38  0.080 / 0.140
G20     28.2           64.5                4.3 +/-    0.49       4.7 +/-    0.49  0.330 / 0.540
G21     323.5          54.6                4.1 +/-    0.43       4.9 +/-    0.43  0.230 / 0.480
G26     284.8          19.2                5.9 +/-    0.76      13.3 +/-    0.76  0.030 / 0.030
G29     156.5          62.2                6.5 +/-    0.71       7.2 +/-    0.71  0.030 / 0.030