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                5.0 +/-    0.82       8.2 +/-    0.82  0.030 / 0.030
G07     129.5          40.7                6.6 +/-    0.82       9.6 +/-    0.82  0.030 / 0.030
G11     62.4           36.9                3.6 +/-    0.44       5.6 +/-    0.44  0.080 / 0.110
G13     288.8          37.5                3.5 +/-    1.01       5.3 +/-    1.01  0.080 / 0.110
G17     217.9          60.0                6.5 +/-    1.21       7.4 +/-    1.21  0.070 / 0.160
G18     57.9           22.0                1.6 +/-    1.58       3.3 +/-    1.58  0.060 / 0.210
G19     217.0          27.1                5.3 +/-    1.67       9.9 +/-    1.67  0.040 / 0.070
G28     355.8          61.5                4.4 +/-    0.74       4.9 +/-    0.74  0.040 / 0.070
G30     115.6          74.3                6.5 +/-    1.06       6.7 +/-    1.06  0.030 / 0.050