PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-15:12:40
G08     315.7          15.8                5.9 +/-    2.93      14.3 +/-    2.93  0.060 / 0.070
G10     319.9          58.2                5.7 +/-    0.70       6.6 +/-    0.70  0.070 / 0.070
G14     214.1          18.9                5.5 +/-    2.29      12.5 +/-    2.29  0.260 / 0.550
G15     45.7           13.9                3.3 +/-    2.42       8.6 +/-    2.42  0.210 / 0.540
G20     27.9           61.6                6.9 +/-    0.80       7.7 +/-    0.80  0.040 / 0.040
G21     124.0          63.8                6.5 +/-    0.61       7.2 +/-    0.61  0.040 / 0.050
G24     85.6           30.1                7.1 +/-    1.83      12.3 +/-    1.83  0.170 / 0.200
G27     286.1          38.1                5.5 +/-    1.76       8.2 +/-    1.76  0.210 / 0.350
G32     215.8          45.7                7.1 +/-    0.84       9.5 +/-    0.84  0.040 / 0.040