PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/25-04:42:30
G01     93.2           31.1                6.8 +/-    1.32      11.7 +/-    1.32  0.030 / 0.040
G07     123.0          47.4                7.0 +/-    0.53       9.1 +/-    0.53  0.040 / 0.040
G08     42.2           9.8                 1.7 +/-    6.07       4.8 +/-    6.07  0.150 / 0.330
G11     73.0           40.8                5.9 +/-    1.63       8.4 +/-    1.63  0.190 / 0.720
G13     298.7          34.2                4.9 +/-    2.25       7.8 +/-    2.25  0.040 / 0.040
G17     212.7          51.6                8.2 +/-    0.66      10.2 +/-    0.66  0.040 / 0.050
G19     213.4          25.7                6.3 +/-    1.29      12.0 +/-    1.29  0.070 / 0.080
G28     345.5          61.8                4.8 +/-    0.66       5.4 +/-    0.66  0.090 / 0.090
G30     98.4           75.7                6.4 +/-    0.46       6.5 +/-    0.46  0.050 / 0.070