PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-18:12:50
G08     270.0          20.3                9.0 +/-    1.18      19.7 +/-    1.18  0.170 / 0.360
G10     52.5           59.7                8.5 +/-    0.94       9.7 +/-    0.94  0.080 / 0.350
G14     256.8          63.7               10.5 +/-    0.77      11.5 +/-    0.77  0.100 / 0.230
G18     313.8          30.4                8.2 +/-    1.34      14.3 +/-    1.34  0.090 / 0.200
G20     90.4           39.8                8.7 +/-    1.10      12.7 +/-    1.10  0.040 / 0.030
G21     153.1          17.4                8.1 +/-    0.94      19.1 +/-    0.94  0.040 / 0.040
G24     39.8           9.9                 7.4 +/-    1.56      20.7 +/-    1.56  0.120 / 0.230
G27     238.0          19.8               10.6 +/-    2.34      23.5 +/-    2.34  0.270 / 0.290
G31     181.6          22.4               11.3 +/-    2.44      23.3 +/-    2.44  0.060 / 0.050
G32     315.4          75.8                9.8 +/-    0.38      10.0 +/-    0.38  0.060 / 0.050