PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/22-14:28:00
G10     265.8          38.0                3.4 +/-    0.81       5.0 +/-    0.81  0.040 / 0.040
G13     42.4           18.8                3.0 +/-    2.76       6.7 +/-    2.76  0.030 / 0.030
G15     61.3           50.6                3.6 +/-    0.72       4.6 +/-    0.72  0.150 / 0.280
G16     282.1          12.4                2.0 +/-    2.01       5.2 +/-    2.01  0.170 / 0.220
G20     295.5          59.8                3.5 +/-    0.96       4.0 +/-    0.96  0.130 / 0.250
G21     11.3           72.4                3.8 +/-    0.56       4.0 +/-    0.56  0.290 / 0.380
G24     117.5          13.9                6.8 +/-    2.55      17.4 +/-    2.55  0.100 / 0.070
G27     320.3          15.6                1.8 +/-    2.11       4.5 +/-    2.11  0.110 / 0.060
G29     166.5          30.8                5.5 +/-    0.83       9.5 +/-    0.83  0.310 / 0.560