PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-20:27:50
G01     277.3          41.8                9.0 +/-    2.04      12.7 +/-    2.04  0.070 / 0.090
G03     314.8          25.0                7.6 +/-    0.96      14.9 +/-    0.96  0.060 / 0.080
G10     126.7          20.1               12.5 +/-    0.89      27.5 +/-    0.89  0.090 / 0.130
G11     253.3          22.0               10.2 +/-    2.41      21.3 +/-    2.41  0.080 / 0.130
G14     38.3           52.5                8.3 +/-    0.94      10.1 +/-    0.94  0.120 / 0.400
G18     235.1          41.8               10.5 +/-    1.80      14.8 +/-    1.80  0.130 / 0.310
G22     314.6          46.9                7.0 +/-    1.82       9.1 +/-    1.82  0.060 / 0.060
G25     51.7           14.7                5.9 +/-    1.00      14.9 +/-    1.00  0.060 / 0.080
G31     85.0           80.9                9.1 +/-    0.43       9.2 +/-    0.43  0.040 / 0.070
G32     59.4           36.2                6.9 +/-    0.56      10.7 +/-    0.56  0.040 / 0.070