PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/11-09:27:40
G01     73.2           33.2                5.0 +/-    0.77       8.2 +/-    0.77  0.040 / 0.040
G07     136.2          31.8                7.9 +/-    0.60      13.3 +/-    0.60  0.030 / 0.040
G11     54.1           31.0                4.5 +/-    0.58       7.8 +/-    0.58  0.040 / 0.080
G13     276.6          38.0                6.7 +/-    1.03      10.1 +/-    1.03  0.060 / 0.100
G15     307.8          12.6                3.4 +/-    1.42       8.9 +/-    1.42  0.050 / 0.080
G17     230.4          69.6                6.2 +/-    0.73       6.6 +/-    0.73  0.040 / 0.090
G18     49.2           18.0                2.2 +/-    0.56       5.0 +/-    0.56  0.050 / 0.100
G19     222.5          36.2               10.7 +/-    1.39      16.6 +/-    1.39  0.050 / 0.120
G28     13.6           60.2                3.7 +/-    0.52       4.2 +/-    0.52  0.070 / 0.180
G30     133.3          65.6                6.4 +/-    0.50       7.0 +/-    0.50  0.070 / 0.180