PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/15-09:28:00
G01     124.4          13.8                4.2 +/-    2.60      10.8 +/-    2.60  0.040 / 0.040
G07     64.8           68.5                4.7 +/-    0.40       5.0 +/-    0.40  0.030 / 0.040
G08     47.3           35.1                3.0 +/-    0.56       4.8 +/-    0.56  0.040 / 0.060
G09     174.4          28.2                6.1 +/-    2.18      11.2 +/-    2.18  0.040 / 0.060
G11     113.0          37.3                5.6 +/-    0.76       8.5 +/-    0.76  0.030 / 0.040
G13     320.0          14.7                0.8 +/-    2.54       2.1 +/-    2.54  0.030 / 0.040
G17     199.8          19.6                3.9 +/-    1.36       8.6 +/-    1.36  0.170 / 0.350
G18     99.2           18.2                4.9 +/-    2.04      11.3 +/-    2.04  0.160 / 0.310
G28     280.5          54.0                4.8 +/-    0.67       5.7 +/-    0.67  0.120 / 0.330
G30     334.7          62.2                2.8 +/-    0.83       3.1 +/-    0.83  0.110 / 0.260