PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/29-21:27:50
G03     254.2          70.2               10.7 +/-    1.05      11.3 +/-    1.05  0.140 / 0.220
G09     300.8          15.9                8.5 +/-    1.56      20.6 +/-    1.56  0.150 / 0.240
G14     95.7           17.0               10.4 +/-    1.94      24.7 +/-    1.94  0.040 / 0.030
G16     137.4          54.0               11.9 +/-    0.60      14.4 +/-    0.60  0.030 / 0.020
G22     200.1          60.7               11.7 +/-    0.65      13.2 +/-    0.65  0.090 / 0.070
G23     313.8          43.2                9.3 +/-    1.19      12.8 +/-    1.19  0.080 / 0.070
G26     82.4           55.4                8.8 +/-    0.83      10.5 +/-    0.83  0.040 / 0.040
G31     48.4           27.8                5.7 +/-    2.05      10.4 +/-    2.05  0.040 / 0.050