PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-09:12:50
G08     266.6          16.2                7.9 +/-    3.09      19.1 +/-    3.09  0.040 / 0.070
G10     68.2           56.8                4.6 +/-    0.70       5.4 +/-    0.70  0.050 / 0.060
G11     309.7          18.5                5.3 +/-    1.89      12.2 +/-    1.89  0.240 / 0.460
G14     269.3          64.4                5.4 +/-    0.73       5.9 +/-    0.73  0.210 / 0.350
G18     310.5          34.2                7.6 +/-    1.93      12.2 +/-    1.93  0.110 / 0.200
G20     106.6          13.1                5.1 +/-    1.54      13.4 +/-    1.54  0.120 / 0.230
G21     155.3          11.8                4.1 +/-    2.59      10.9 +/-    2.59  0.030 / 0.040
G27     228.5          13.1                1.1 +/-   26.41       2.8 +/-   26.41  0.030 / 0.040
G31     175.8          36.4                7.6 +/-    1.06      11.7 +/-    1.06  0.110 / 0.390
G32     356.9          71.2                6.0 +/-    0.68       6.3 +/-    0.68  0.120 / 0.330