PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-03:28:10
G01     41.3           16.4                2.8 +/-    1.90       6.8 +/-    1.90  0.040 / 0.050
G06     177.1          37.1                6.5 +/-    1.08       9.9 +/-    1.08  0.050 / 0.050
G13     238.6          22.1                4.2 +/-    2.33       8.9 +/-    2.33  0.030 / 0.030
G15     270.1          12.5                2.8 +/-    1.64       7.4 +/-    1.64  0.020 / 0.030
G17     358.3          71.1                4.0 +/-    0.73       4.3 +/-    0.73  0.200 / 0.170
G19     278.9          69.5                4.0 +/-    0.49       4.2 +/-    0.49  0.180 / 0.140
G24     316.9          18.5                1.6 +/-    2.41       3.7 +/-    2.41  0.090 / 0.080
G28     72.3           46.3                3.7 +/-    1.48       4.9 +/-    1.48  0.100 / 0.080
G30     153.4          23.7                7.9 +/-    3.07      15.9 +/-    3.07  0.160 / 0.240