PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-08:27:20
G02     203.9          40.6                9.8 +/-    0.78      14.1 +/-    0.78  0.080 / 0.130
G06     167.7          69.9                9.4 +/-    0.49       9.9 +/-    0.49  0.070 / 0.120
G12     309.6          17.2                5.7 +/-    3.50      13.5 +/-    3.50  0.130 / 0.210
G17     40.9           45.4                4.3 +/-    1.08       5.8 +/-    1.08  0.120 / 0.160
G19     12.7           61.9                3.8 +/-    0.40       4.3 +/-    0.40  0.040 / 0.020
G24     294.6          39.1                5.7 +/-    2.20       8.5 +/-    2.20  0.040 / 0.020
G28     107.0          27.7                8.7 +/-    1.65      16.0 +/-    1.65  0.040 / 0.060