PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-11:42:30
G01     73.1           33.0                3.1 +/-    1.18       5.1 +/-    1.18  0.050 / 0.070
G07     136.1          30.8                5.9 +/-    0.80      10.2 +/-    0.80  0.070 / 0.100
G11     54.6           30.3                3.2 +/-    1.58       5.6 +/-    1.58  0.050 / 0.070
G13     279.6          36.9                5.0 +/-    0.71       7.6 +/-    0.71  0.060 / 0.070
G15     305.5          14.4                2.3 +/-    2.64       5.7 +/-    2.64  0.070 / 0.250
G17     231.0          69.8                4.7 +/-    0.57       5.0 +/-    0.57  0.070 / 0.210
G19     222.8          42.0                5.5 +/-    1.72       7.7 +/-    1.72  0.030 / 0.030
G28     16.6           59.5                3.7 +/-    0.78       4.2 +/-    0.78  0.030 / 0.030
G30     132.0          65.2                5.8 +/-    0.48       6.3 +/-    0.48  0.040 / 0.030