PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-04:27:50
G01     40.0           14.5                2.1 +/-    2.74       5.3 +/-    2.74  0.050 / 0.070
G02     198.7          12.2                3.8 +/-    4.90      10.2 +/-    4.90  0.060 / 0.060
G06     177.2          39.4                5.1 +/-    0.63       7.5 +/-    0.63  0.120 / 0.250
G13     236.5          20.3                4.1 +/-    2.90       8.9 +/-    2.90  0.120 / 0.340
G15     267.8          11.6                4.1 +/-    1.40      11.2 +/-    1.40  0.210 / 0.250
G17     5.1            68.8                3.2 +/-    0.36       3.4 +/-    0.36  0.210 / 0.320
G19     287.7          70.6                2.7 +/-    0.56       2.8 +/-    0.56  0.030 / 0.030
G24     316.1          20.5                0.9 +/-    2.45       1.9 +/-    2.45  0.030 / 0.030
G28     75.7           45.0                3.7 +/-    1.00       5.0 +/-    1.00  0.100 / 0.200
G30     154.2          21.8                5.7 +/-    2.67      12.1 +/-    2.67  0.090 / 0.270