PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-14:27:50
G01     65.6           31.8                8.9 +/-    0.94      15.0 +/-    0.94  0.100 / 0.230
G06     181.5          10.5              -14.9 +/-   25.88     -41.1 +/-   25.88  0.090 / 0.220
G07     139.5          24.1                8.4 +/-    1.43      16.8 +/-    1.43  0.030 / 0.020
G11     50.1           25.1                6.6 +/-    1.67      12.9 +/-    1.67  0.030 / 0.040
G13     271.5          36.2                9.5 +/-    1.45      14.8 +/-    1.45  0.060 / 0.120
G15     301.2          15.1                3.0 +/-    2.21       7.4 +/-    2.21  0.100 / 0.130
G17     246.4          75.4               10.6 +/-    0.48      11.0 +/-    0.48  0.050 / 0.130
G19     228.0          48.1              -57.2 +/-   38.90     -73.9 +/-   38.90  0.060 / 0.110
G28     27.4           58.0                3.8 +/-    3.18       4.3 +/-    3.18  0.030 / 0.020
G30     139.0          59.8                9.9 +/-    0.64      11.3 +/-    0.64  0.030 / 0.020