PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/25-22:13:00
G03     221.3          63.0                9.1 +/-    1.19      10.1 +/-    1.19  0.090 / 0.360
G07     253.7          14.2                7.7 +/-    4.12      19.6 +/-    4.12  0.120 / 0.360
G09     308.2          25.7                8.0 +/-    1.69      15.3 +/-    1.69  0.050 / 0.050
G16     113.1          63.1               11.1 +/-    0.44      12.3 +/-    0.44  0.050 / 0.050
G22     191.5          47.4               10.1 +/-    0.49      13.2 +/-    0.49  0.060 / 0.060
G23     323.4          53.4                8.8 +/-    0.52      10.6 +/-    0.52  0.050 / 0.040
G26     61.5           49.6                7.5 +/-    0.88       9.5 +/-    0.88  0.040 / 0.040
G31     55.1           17.7                6.9 +/-    2.19      16.1 +/-    2.19  0.030 / 0.050