PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/23-06:42:40
G01     98.8           29.2                6.6 +/-    0.96      11.8 +/-    0.96  0.040 / 0.040
G07     117.7          51.1                7.2 +/-    0.65       9.0 +/-    0.65  0.040 / 0.040
G08     41.8           13.1                2.2 +/-    3.20       5.7 +/-    3.20  0.030 / 0.030
G11     78.4           41.4                4.9 +/-    1.41       7.0 +/-    1.41  0.030 / 0.030
G13     304.0          31.8                4.7 +/-    1.35       7.9 +/-    1.35  0.040 / 0.040
G17     209.4          47.4                6.8 +/-    0.88       8.8 +/-    0.88  0.030 / 0.040
G19     211.4          21.4                4.7 +/-    1.72      10.1 +/-    1.72  0.260 / 0.340
G28     335.3          61.8                4.2 +/-    0.43       4.6 +/-    0.43  0.160 / 0.180
G30     70.3           79.0                6.9 +/-    1.22       7.0 +/-    1.22  0.080 / 0.090