PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-10:12:40
G01     84.8           32.8                4.3 +/-    2.43       7.1 +/-    2.43  0.050 / 0.070
G07     129.5          40.7                7.5 +/-    0.70      10.8 +/-    0.70  0.050 / 0.050
G11     62.4           36.9                5.0 +/-    0.60       7.7 +/-    0.60  0.030 / 0.020
G13     288.8          37.5                1.5 +/-    1.24       2.3 +/-    1.24  0.020 / 0.020
G17     217.9          60.0                5.7 +/-    1.00       6.5 +/-    1.00  0.090 / 0.090
G18     57.9           22.0                3.5 +/-    2.56       7.3 +/-    2.56  0.080 / 0.090
G19     217.0          27.1                4.4 +/-    2.70       8.1 +/-    2.70  0.060 / 0.090
G28     355.8          61.5                4.7 +/-    0.49       5.3 +/-    0.49  0.070 / 0.110
G30     115.6          74.3                6.8 +/-    0.76       7.0 +/-    0.76  0.130 / 0.160