PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-16:42:30
G02     204.2          32.4               14.1 +/-    2.29      23.4 +/-    2.29  0.140 / 0.110
G03     58.7           9.8                 7.7 +/-    1.94      21.7 +/-    1.94  0.140 / 0.130
G06     158.6          69.8               12.1 +/-    0.40      12.8 +/-    0.40  0.290 / 0.220
G12     308.4          16.4                9.5 +/-    3.50      22.8 +/-    3.50  0.210 / 0.240
G17     39.3           46.5                9.1 +/-    1.16      12.0 +/-    1.16  0.090 / 0.080
G19     8.0            63.8                9.9 +/-    0.59      10.9 +/-    0.59  0.080 / 0.080
G24     299.1          37.3               10.9 +/-    2.67      16.6 +/-    2.67  0.030 / 0.060
G28     103.6          30.4                9.5 +/-    0.77      16.4 +/-    0.77  0.030 / 0.050