PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-03:28:10
G01     54.5           28.1                2.6 +/-    2.44       4.7 +/-    2.44  0.030 / 0.040
G06     180.9          18.1                3.8 +/-    1.12       8.8 +/-    1.12  0.040 / 0.050
G07     144.7          17.1                4.9 +/-    1.69      11.5 +/-    1.69  0.130 / 0.090
G11     46.8           20.8                3.4 +/-    2.41       7.2 +/-    2.41  0.200 / 0.090
G13     256.9          32.7                4.1 +/-    2.72       6.7 +/-    2.72  0.100 / 0.130
G15     287.6          16.6                4.6 +/-    1.08      11.1 +/-    1.08  0.080 / 0.120
G17     284.0          78.3                5.5 +/-    0.88       5.6 +/-    0.88  0.030 / 0.020
G19     240.0          56.6                6.6 +/-    2.63       7.8 +/-    2.63  0.030 / 0.020
G28     46.0           54.3                4.6 +/-    0.67       5.5 +/-    0.67  0.130 / 0.270
G30     146.3          42.7                5.8 +/-    0.91       8.1 +/-    0.91  0.140 / 0.230