PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-08:57:40
G02     254.1          79.8                4.8 +/-    0.50       4.9 +/-    0.50  0.030 / 0.030
G05     170.8          18.5                5.4 +/-    1.91      12.3 +/-    1.91  0.030 / 0.020
G06     39.0           61.3                4.3 +/-    0.70       4.9 +/-    0.70  0.030 / 0.030
G12     321.1          52.9                5.2 +/-    0.67       6.4 +/-    0.67  0.030 / 0.060
G17     73.7           20.3                4.3 +/-    1.17       9.4 +/-    1.17  0.080 / 0.140
G19     60.8           36.1                4.3 +/-    1.33       6.8 +/-    1.33  0.090 / 0.110
G24     243.9          33.5                6.7 +/-    1.99      11.0 +/-    1.99  0.100 / 0.150
G25     317.2          14.6                4.2 +/-    1.77      10.6 +/-    1.77  0.110 / 0.120