PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-17:42:40
G01     315.9          25.8                6.7 +/-    1.04      12.9 +/-    1.04  0.130 / 0.260
G10     89.8           47.4                8.6 +/-    0.94      11.2 +/-    0.94  0.130 / 0.290
G11     301.0          22.3                7.8 +/-    1.54      16.1 +/-    1.54  0.040 / 0.050
G14     304.0          70.0                7.7 +/-    0.64       8.2 +/-    0.64  0.040 / 0.040
G20     111.8          21.2                8.0 +/-    0.80      17.2 +/-    0.80  0.180 / 0.290
G22     304.1          14.0                6.5 +/-    4.48      16.6 +/-    4.48  0.150 / 0.250
G25     95.7           10.7               10.8 +/-    3.34      29.6 +/-    3.34  0.040 / 0.040
G31     174.8          48.0                9.2 +/-    0.85      11.9 +/-    0.85  0.050 / 0.040
G32     21.3           61.8                7.4 +/-    0.66       8.3 +/-    0.66  0.040 / 0.060