PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/25-00:57:50
G03     189.6          17.8                7.7 +/-    1.41      17.8 +/-    1.41  0.080 / 0.090
G07     294.1          39.6                4.6 +/-    2.73       6.7 +/-    2.73  0.110 / 0.080
G08     138.8          31.1               10.0 +/-    0.81      17.1 +/-    0.81  0.060 / 0.070
G09     319.4          65.8                5.6 +/-    0.77       6.0 +/-    0.77  0.040 / 0.110
G16     42.2           38.8                4.5 +/-    1.08       6.6 +/-    1.08  0.070 / 0.080
G23     125.2          76.8                5.5 +/-    0.46       5.6 +/-    0.46  0.070 / 0.060
G26     44.0           10.1                3.6 +/-    1.42      10.1 +/-    1.42  0.030 / 0.020
G27     93.7           35.0                7.5 +/-    0.93      11.8 +/-    0.93  0.030 / 0.020
G30     277.1          16.4                5.3 +/-    1.79      12.8 +/-    1.79  0.230 / 0.290