PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-17:12:40
G02     200.7          17.8               14.7 +/-    1.43      34.0 +/-    1.43  0.140 / 0.160
G06     169.2          53.7               14.9 +/-    0.77      18.0 +/-    0.77  0.150 / 0.220
G13     228.2          14.1               13.2 +/-    1.90      33.5 +/-    1.90  0.080 / 0.120
G17     19.7           61.2               13.2 +/-    0.74      14.8 +/-    0.74  0.090 / 0.120
G19     308.1          70.4               12.6 +/-    0.55      13.3 +/-    0.55  0.130 / 0.340
G24     310.4          29.5               12.7 +/-    1.90      22.4 +/-    1.90  0.180 / 0.720
G28     86.2           40.6               12.0 +/-    1.62      17.2 +/-    1.62  0.040 / 0.050
G30     157.3          16.7               13.8 +/-    2.02      33.0 +/-    2.02  0.040 / 0.040